Pathological processes of the BREAST.
A common and benign breast disease characterized by varying degree of fibrocystic changes in the breast tissue. There are three major patterns of morphological changes, including FIBROSIS, formation of CYSTS, and proliferation of glandular tissue (adenosis). The fibrocystic breast has a dense irregular, lumpy, bumpy consistency.
In humans, one of the paired regions in the anterior portion of the THORAX. The breasts consist of the MAMMARY GLANDS, the SKIN, the MUSCLES, the ADIPOSE TISSUE, and the CONNECTIVE TISSUES.
An adenoma containing fibrous tissue. It should be differentiated from ADENOFIBROMA which is a tumor composed of connective tissue (fibroma) containing glandular (adeno-) structures. (From Dorland, 27th ed)
Tumors or cancer of the human BREAST.
A benign neoplasm composed of glandular and fibrous tissues, with a relatively large proportion of glands. (Stedman, 25th ed)
An invasive (infiltrating) CARCINOMA of the mammary ductal system (MAMMARY GLANDS) in the human BREAST.
Radiographic examination of the breast.
An increase in the number of cells in a tissue or organ without tumor formation. It differs from HYPERTROPHY, which is an increase in bulk without an increase in the number of cells.
A noninvasive (noninfiltrating) carcinoma of the breast characterized by a proliferation of malignant epithelial cells confined to the mammary ducts or lobules, without light-microscopy evidence of invasion through the basement membrane into the surrounding stroma.
A fluid-filled closed cavity or sac that is lined by an EPITHELIUM and found in the BREAST. It may appear as a single large cyst in one breast, multifocal, or bilateral in FIBROCYSTIC BREAST DISEASE.
The conic organs which usually give outlet to milk from the mammary glands.
The last menstrual period. Permanent cessation of menses (MENSTRUATION) is usually defined after 6 to 12 months of AMENORRHEA in a woman over 45 years of age. In the United States, menopause generally occurs in women between 48 and 55 years of age.
A lesion with cytological characteristics associated with invasive carcinoma but the tumor cells are confined to the epithelium of origin, without invasion of the basement membrane.
Pathological processes that tend eventually to become malignant. (From Dorland, 27th ed)
A infiltrating (invasive) breast cancer, relatively uncommon, accounting for only 5%-10% of breast tumors in most series. It is often an area of ill-defined thickening in the breast, in contrast to the dominant lump characteristic of ductal carcinoma. It is typically composed of small cells in a linear arrangement with a tendency to grow around ducts and lobules. There is likelihood of axillary nodal involvement with metastasis to meningeal and serosal surfaces. (DeVita Jr et al., Cancer: Principles & Practice of Oncology, 3d ed, p1205)
An aspect of personal behavior or lifestyle, environmental exposure, or inborn or inherited characteristic, which, on the basis of epidemiologic evidence, is known to be associated with a health-related condition considered important to prevent.
Removal and examination of tissue obtained through a transdermal needle inserted into the specific region, organ, or tissue being analyzed.
Removal and pathologic examination of specimens in the form of small pieces of tissue from the living body.
Studies which start with the identification of persons with a disease of interest and a control (comparison, referent) group without the disease. The relationship of an attribute to the disease is examined by comparing diseased and non-diseased persons with regard to the frequency or levels of the attribute in each group.
Cytoplasmic proteins that bind estrogens and migrate to the nucleus where they regulate DNA transcription. Evaluation of the state of estrogen receptors in breast cancer patients has become clinically important.
Use of ultrasound for imaging the breast. The most frequent application is the diagnosis of neoplasms of the female breast.
The nursing of an infant at the breast.
Application of fingers with light pressure to the surface of the body to determine consistence of parts beneath in physical diagnosis; includes palpation for determining the outlines of organs.
INFLAMMATION of the BREAST, or MAMMARY GLAND.
Specific proteins found in or on cells of progesterone target tissues that specifically combine with progesterone. The cytosol progesterone-receptor complex then associates with the nucleic acids to initiate protein synthesis. There are two kinds of progesterone receptors, A and B. Both are induced by estrogen and have short half-lives.
Surgical procedure to remove one or both breasts.
Molecular products metabolized and secreted by neoplastic tissue and characterized biochemically in cells or body fluids. They are indicators of tumor stage and grade as well as useful for monitoring responses to treatment and predicting recurrence. Many chemical groups are represented including hormones, antigens, amino and nucleic acids, enzymes, polyamines, and specific cell membrane proteins and lipids.
Ability of neoplasms to infiltrate and actively destroy surrounding tissue.
Age as a constituent element or influence contributing to the production of a result. It may be applicable to the cause or the effect of a circumstance. It is used with human or animal concepts but should be differentiated from AGING, a physiological process, and TIME FACTORS which refers only to the passage of time.
The probability that an event will occur. It encompasses a variety of measures of the probability of a generally unfavorable outcome.
The physiological period following the MENOPAUSE, the permanent cessation of the menstrual life.
Compounds that interact with ESTROGEN RECEPTORS in target tissues to bring about the effects similar to those of ESTRADIOL. Estrogens stimulate the female reproductive organs, and the development of secondary female SEX CHARACTERISTICS. Estrogenic chemicals include natural, synthetic, steroidal, or non-steroidal compounds.
The number of offspring a female has borne. It is contrasted with GRAVIDITY, which refers to the number of pregnancies, regardless of outcome.
Observation of a population for a sufficient number of persons over a sufficient number of years to generate incidence or mortality rates subsequent to the selection of the study group.
Any neoplasms of the male breast. These occur infrequently in males in developed countries, the incidence being about 1% of that in females.
The periodic shedding of the ENDOMETRIUM and associated menstrual bleeding in the MENSTRUAL CYCLE of humans and primates. Menstruation is due to the decline in circulating PROGESTERONE, and occurs at the late LUTEAL PHASE when LUTEOLYSIS of the CORPUS LUTEUM takes place.
A malignant neoplasm made up of epithelial cells tending to infiltrate the surrounding tissues and give rise to metastases. It is a histological type of neoplasm but is often wrongly used as a synonym for "cancer." (From Dorland, 27th ed)
The period before MENOPAUSE. In premenopausal women, the climacteric transition from full sexual maturity to cessation of ovarian cycle takes place between the age of late thirty and early fifty.
Liquid components of living organisms.
A prediction of the probable outcome of a disease based on a individual's condition and the usual course of the disease as seen in similar situations.
The first MENSTRUAL CYCLE marked by the initiation of MENSTRUATION.
Histochemical localization of immunoreactive substances using labeled antibodies as reagents.
The transfer of a neoplasm from one organ or part of the body to another remote from the primary site.
Studies in which subsets of a defined population are identified. These groups may or may not be exposed to factors hypothesized to influence the probability of the occurrence of a particular disease or other outcome. Cohorts are defined populations which, as a whole, are followed in an attempt to determine distinguishing subgroup characteristics.
The use of hormonal agents with estrogen-like activity in postmenopausal or other estrogen-deficient women to alleviate effects of hormone deficiency, such as vasomotor symptoms, DYSPAREUNIA, and progressive development of OSTEOPOROSIS. This may also include the use of progestational agents in combination therapy.
A cell line derived from cultured tumor cells.
Implants used to reconstruct and/or cosmetically enhance the female breast. They have an outer shell or envelope of silicone elastomer and are filled with either saline or silicone gel. The outer shell may be either smooth or textured.
The ratio of two odds. The exposure-odds ratio for case control data is the ratio of the odds in favor of exposure among cases to the odds in favor of exposure among noncases. The disease-odds ratio for a cohort or cross section is the ratio of the odds in favor of disease among the exposed to the odds in favor of disease among the unexposed. The prevalence-odds ratio refers to an odds ratio derived cross-sectionally from studies of prevalent cases.
An intracellular proteinase found in a variety of tissue. It has specificity similar to but narrower than that of pepsin A. The enzyme is involved in catabolism of cartilage and connective tissue. EC 3.4.23.5. (Formerly EC 3.4.4.23).
A cell surface protein-tyrosine kinase receptor that is overexpressed in a variety of ADENOCARCINOMAS. It has extensive homology to and heterodimerizes with the EGF RECEPTOR, the ERBB-3 RECEPTOR, and the ERBB-4 RECEPTOR. Activation of the erbB-2 receptor occurs through heterodimer formation with a ligand-bound erbB receptor family member.
Transfer of a neoplasm from its primary site to lymph nodes or to distant parts of the body by way of the lymphatic system.
The qualitative or quantitative estimation of the likelihood of adverse effects that may result from exposure to specified health hazards or from the absence of beneficial influences. (Last, Dictionary of Epidemiology, 1988)
The inspection of one's breasts, usually for signs of disease, especially neoplastic disease.
Statistical models used in survival analysis that assert that the effect of the study factors on the hazard rate in the study population is multiplicative and does not change over time.
Methods which attempt to express in replicable terms the extent of the neoplasm in the patient.
Binary classification measures to assess test results. Sensitivity or recall rate is the proportion of true positives. Specificity is the probability of correctly determining the absence of a condition. (From Last, Dictionary of Epidemiology, 2d ed)
Proteins whose abnormal expression (gain or loss) are associated with the development, growth, or progression of NEOPLASMS. Some neoplasm proteins are tumor antigens (ANTIGENS, NEOPLASM), i.e. they induce an immune reaction to their tumor. Many neoplasm proteins have been characterized and are used as tumor markers (BIOMARKERS, TUMOR) when they are detectable in cells and body fluids as monitors for the presence or growth of tumors. Abnormal expression of ONCOGENE PROTEINS is involved in neoplastic transformation, whereas the loss of expression of TUMOR SUPPRESSOR PROTEINS is involved with the loss of growth control and progression of the neoplasm.
The number of new cases of a given disease during a given period in a specified population. It also is used for the rate at which new events occur in a defined population. It is differentiated from PREVALENCE, which refers to all cases, new or old, in the population at a given time.
Elements of limited time intervals, contributing to particular results or situations.
One of the SELECTIVE ESTROGEN RECEPTOR MODULATORS with tissue-specific activities. Tamoxifen acts as an anti-estrogen (inhibiting agent) in the mammary tissue, but as an estrogen (stimulating agent) in cholesterol metabolism, bone density, and cell proliferation in the ENDOMETRIUM.
Compounds that interact with PROGESTERONE RECEPTORS in target tissues to bring about the effects similar to those of PROGESTERONE. Primary actions of progestins, including natural and synthetic steroids, are on the UTERUS and the MAMMARY GLAND in preparation for and in maintenance of PREGNANCY.
Organized periodic procedures performed on large groups of people for the purpose of detecting disease.
A range of values for a variable of interest, e.g., a rate, constructed so that this range has a specified probability of including the true value of the variable.
Organized services in a hospital which provide medical care on an outpatient basis.
Studies in which individuals or populations are followed to assess the outcome of exposures, procedures, or effects of a characteristic, e.g., occurrence of disease.

Measurement of prostate-specific antigen in detection of benign or malignant breast disease in women. (1/757)

Using a highly sensitive chemiluminescent enzyme immunoassay, we have evaluated the measurement of serum prostate-specific antigen (PSA) as a potential diagnostic test for differentiation between women with breast cancer and those with benign breast disease. In a controlled study consisting of 284 women with well-documented patient files and matched for age and long-term place of residence, serum samples collected from 90 women with histologically confirmed breast cancer, 94 women with benign breast disease and 100 controls were analysed. Serum total PSA levels in benign breast disease and cancer patients are not statistically different from those of healthy controls. Total PSA levels decrease with age in normal controls and breast cancer patients but not in those with benign breast disease. The total PSA concentration decreases after menopause in healthy women, though not in patients with breast cancer or benign breast disease. Total PSA bore no relation to the histological type or grade of the tumour or the disease stage of the breast cancer patients. In benign breast disease, all mastopathy patients had normal total PSA, whereas elevation of the values was observed in 7% of fibroadenoma patients. Our results show that serum total PSA cannot be used to distinguish between healthy women and/or women with breast cancer or benign breast disease.  (+info)

Systemic multifocal fibrosclerosis. (2/757)

We describe a case of hydronephrosis as a result of retroperitoneal fibrosis in a patient who had previous sclerosing lobulitis of the breast. To the best of our knowledge this is the first reported association between these two conditions in the english literature. We presume these conditions are linked and unify them under the general heading of systemic multifocal fibrosclerosis.  (+info)

Screening for breast cancer: time, travel, and out-of-pocket expenses. (3/757)

BACKGROUND: We estimated the personal costs to women found to have a breast problem (either breast cancer or benign breast disease) in terms of time spent, miles traveled, and cash payments made for detection, diagnosis, initial treatment, and follow-up. METHODS: We analyzed data from personal interviews with 465 women from four communities in Florida. These women were randomly selected from those with a recent breast biopsy (within 6-8 months) that indicated either breast cancer (208 women) or benign breast disease (257 women). One community was the site of a multifaceted intervention to promote breast screening, and the other three communities were comparison sites for evaluation of that intervention. All P values are two-sided. RESULTS: In comparison with time spent and travel distance for women with benign breast disease (13 hours away from home and 56 miles traveled), time spent and travel distance were statistically significantly higher (P<.001) for treatment and follow-up of women with breast cancer (89 hours and 369 miles). Personal financial costs for treatment of women with breast cancer were also statistically significantly higher (breast cancer = $604; benign breast disease = $76; P < .001) but were statistically significantly lower for detection and diagnosis (breast cancer = $170; benign breast disease = $310; P < .001). Among women with breast cancer, time spent for treatment was statistically significantly lower (P = .013) when their breast cancer was detected by screening (68.9 hours) than when it was detected because of symptoms (84.2 hours). Personal cash payments for detection, diagnosis, and treatment were statistically significantly lower among women whose breast problems were detected by screening than among women whose breast problems were detected because of symptoms (screening detected = $453; symptom detected = $749; P = .045). CONCLUSION: There are substantial personal costs for women who are found to have a breast problem, whether the costs are associated with problems identified through screening or because of symptoms.  (+info)

Centrosomal kinase AIK1 is overexpressed in invasive ductal carcinoma of the breast. (4/757)

A centrosomal serine/threonine kinase, AIK1(3)/breast tumor amplified kinase/aurora2, which was recently identified as an oncogene, shows high amino acid identity with chromosome segregation kinases, fly Aurora, and yeast Ipl1. Immunohistochemical analyses of invasive ductal adenocarcinomas of the breast revealed that overexpression of AIK1 was observed in 94% of the cases, irrespective of the histopathological type, whereas the protein was not detected in normal ductal and lobular cells. Benign breast lesions including fibrocystic disease and fibroadenoma (epithelial components) displayed weakly detectable AIK1 expression in part of the lesions. This is the first immunohistochemical report of AIK1 expression in primary human breast carcinomas. Although the physiological function(s) of AIK1 kinase during cell division remains to be determined, the markedly high positivity of AIK1 staining in the cancer lesions suggested a possible involvement of its overexpression in the tumorigenesis of some of breast cancer cells.  (+info)

Comparison of mammographically guided breast biopsy techniques. (5/757)

OBJECTIVE: To determine which mammographically guided breast biopsy technique is the most efficient in making a diagnosis in women with suspicious mammograms. SUMMARY BACKGROUND DATA: Mammographically guided biopsy techniques include stereotactic 14-gauge core-needle biopsy (SC bx), stereotactic 11-gauge suction-assisted core biopsy (Mammotome [Mbx]), stereotactic coring excisional biopsy (Advanced Breast Biopsy Instrument [ABBI]), and wire-localized biopsy (WL bx). Controversy exists over which technique is best. METHODS: All patients undergoing any one of these biopsy methods over a 15-month period were reviewed, totaling 245 SC bx, 107 Mbx, 104 ABBI, and 520 WL bx. Information obtained included technical success, pathology, discordant pathology, and need for open biopsy. RESULTS: Technical success was achieved in 94.3% of SC bx, 96.4% of Mbx, 92.5% of ABBI, and 98.7% of WL bx. The sensitivity and specificity were 87.5% and 98.6% for SC bx, 87.5% and 100% for Mbx, and 100% and 100% for ABBI. Discordant results or need for a repeat biopsy occurred in 25.7% of SC bx, 23.2% of Mbx, and 7.5% of ABBI biopsies. In 63.6% of ABBI and 50.9% of WL bx, positive margins required reexcision; of the cases with positive margins, 71.4% of ABBI and 70.4% of WL bx had residual tumor in the definitive treatment specimen. CONCLUSION: Although sensitivities and specificities of SC bx and Mbx are good, 20% to 25% of patients will require an open biopsy because a definitive diagnosis could not be reached. This does not occur with the ABBI excisional biopsy specimen. The positive margin rates and residual tumor rates are comparable between the ABBI and WL bx. The ABBI avoids operating room and reexcision costs; therefore, in appropriately selected patients, this appears to be the most efficient method of biopsy.  (+info)

In vitro estrogen-binding by human breast carcinomas. (6/757)

Patients whose breast carcinomas possess only low concentrations of a receptor molecule that binds estrogens with high affinity are unlikely to respond to hormonal manipulative therapy when the disease recurs. The estrogen-binding capacity of 106 breast carcinomas was measured by an in vitro method and was expressed per milligram wet weight and in some cases related to the concentration of deoxyribonucleic acid (DNA) of the tumours. The ability of tumors to bind 3H-estradiol ranged from 0 to 1.3 fm/mg in pre- and perenopausal women, and from 0 to 16.8 fm/mg in postmenopausal women. Menopausal status or serum concentrations of endogenous estrogen, or both, should therefore be considered when tumours are classified into low and high estrogen-binding capacity. It is not necessary to carry out Scatchard analysis for every tumour, and expressing estradiol binding on the basis of DNA concentration may be preferable to expressing in on a wet-weight basis.  (+info)

MammoWeb continuing medical education (CME): a web-based breast imaging CME program. (7/757)

The ubiquity of the world-wide web allows unique educational opportunities for continuing medical education (CME). We have designed a comprehensive breast imaging CME curriculum to permit individual physicians in their homes or offices to use personal computers to ease the burden of this process. Category 1 CME credits can be earned off-hours without having the physician travel out of town. In addition, since the course is computer-based, the overall costs to the participant are substantially reduced. The program can be updated on an ongoing basis to include new technology or to provide additional information requested by the users.  (+info)

Identification of women with early breast cancer by analysis of p43-positive lymphocytes. (8/757)

Regular screening mammographies and increasing knowledge of high-risk groups have resulted in an improvement in the rate of detection of smaller malignant lesions. However, uncertain minimal mammographic features frequently require further costly and often uncomfortable investigation, including repeat radiological controls or surgical procedures, before cancerous lesions can be identified. Placental isoferritin (p43), a protein with immunosuppressive effects, has been detected on the surface of lymphocytes taken from peripheral blood in patients with breast cancer. In this study we evaluated the sensitivity and specificity of the expression of p43-positive lymphocytes as a marker in early stage breast cancer and also investigated its expression on T-cell subpopulations. The presence of p43-positive lymphocytes was investigated using the monoclonal antibody CM-H-9 and flow cytometry in 76 women with controversial, non-palpable mammographic findings who were undergoing surgical biopsy. Patients with early breast cancer (n = 48) had significantly higher p43-positive cell values (median 3.83%, range 0.98-19.4) than patients with benign lumps (n = 28, median 1.43%, range 0.17-3.7) or controls (n = 22, median 1.3%, range 0.4-1.87) (P < 0.0001). At a cut-off level of 2% p43-positive cells a sensitivity of 91.7% and a specificity of 89.3% for detection of breast cancer could be reached. While the median ratio of total CD4+/CD8+ cells was 2.6, a ratio of 1.3 was found for the p43-positive subpopulation (P < 0.001), thus indicating a significant link between p43 and CD8+ cells. The determination of p43-positive lymphocytes in peripheral blood could serve as an additional diagnostic tool in patients with controversial mammographic findings and could also reduce the need for cost-intensive and often uncomfortable management of these patients.  (+info)

Breast diseases refer to a wide range of conditions that affect the breast tissue. These can be broadly categorized into non-cancerous and cancerous conditions.

Non-cancerous breast diseases include:

1. Fibrocystic breast changes: This is a common condition where the breast tissue becomes lumpy, tender, and sometimes painful. It is caused by hormonal changes and is most common in women aged 20 to 50.
2. Mastitis: This is an infection of the breast tissue, usually occurring in breastfeeding women. Symptoms include redness, swelling, warmth, and pain in the affected area.
3. Breast abscess: This is a collection of pus in the breast tissue, often caused by bacterial infection. It can be painful and may require surgical drainage.
4. Fibroadenomas: These are benign tumors made up of glandular and fibrous tissue. They are usually round, firm, and mobile, and can be removed if they cause discomfort.
5. Intraductal papillomas: These are small, wart-like growths that occur in the milk ducts. They may cause nipple discharge, which can be bloody or clear.

Cancerous breast diseases include:

1. Breast cancer: This is a malignant tumor that starts in the breast tissue. It can spread to other parts of the body if left untreated. There are several types of breast cancer, including ductal carcinoma, lobular carcinoma, and inflammatory breast cancer.
2. Paget's disease of the nipple: This is a rare form of breast cancer that affects the skin of the nipple and areola. It can cause symptoms such as redness, itching, burning, and flaking of the nipple skin.
3. Phyllodes tumors: These are rare breast tumors that can be benign or malignant. They usually grow quickly and may require surgical removal.

It is important to note that not all breast lumps are cancerous, and many non-cancerous conditions can cause breast changes. However, any new or unusual breast symptoms should be evaluated by a healthcare professional to rule out serious conditions such as breast cancer.

Fibrocystic breast disease, also known as fibrocystic change or chronic cystic mastitis, is not actually a disease but a condition that affects many women at some point in their lives. It is characterized by the formation of benign (non-cancerous) lumps or cysts in the breasts, often accompanied by breast pain, tenderness, and swelling.

The condition is caused by hormonal fluctuations that affect the breast tissue, making it more prone to developing fibrous tissue and fluid-filled sacs called cysts. Fibrocystic breast changes are usually harmless and do not increase the risk of breast cancer. However, in some cases, they can make it harder to detect early signs of breast cancer through mammography or self-examination.

The symptoms of fibrocystic breast change may vary from woman to woman and can range from mild to severe. They tend to be more noticeable just before a woman's menstrual period and may improve after menopause. Treatment options for fibrocystic breast changes include pain relievers, hormonal medications, and lifestyle modifications such as reducing caffeine intake and wearing a well-supportive bra. In some cases, draining or removing the cysts may be necessary to alleviate symptoms.

The breast is the upper ventral region of the human body in females, which contains the mammary gland. The main function of the breast is to provide nutrition to infants through the production and secretion of milk, a process known as lactation. The breast is composed of fibrous connective tissue, adipose (fatty) tissue, and the mammary gland, which is made up of 15-20 lobes that are arranged in a radial pattern. Each lobe contains many smaller lobules, where milk is produced during lactation. The milk is then transported through a network of ducts to the nipple, where it can be expressed by the infant.

In addition to its role in lactation, the breast also has important endocrine and psychological functions. It contains receptors for hormones such as estrogen and progesterone, which play a key role in sexual development and reproduction. The breast is also a source of sexual pleasure and can be an important symbol of femininity and motherhood.

It's worth noting that males also have breast tissue, although it is usually less developed than in females. Male breast tissue consists mainly of adipose tissue and does not typically contain functional mammary glands. However, some men may develop enlarged breast tissue due to conditions such as gynecomastia, which can be caused by hormonal imbalances or certain medications.

A fibroadenoma is a benign (noncancerous) breast tumor that is most commonly found in women between the ages of 15 and 35, although it can occur at any age. It is composed of glandular and connective tissue. The tumor typically feels firm, smooth, and rubbery, and its size may vary from quite small to over 2 inches in diameter.

Fibroadenomas are usually mobile within the breast tissue, which means they can be moved around easily when touched. They can occur as a single lump or multiple lumps (known as fibroadenomatosis). The exact cause of fibroadenomas is not known, but hormonal factors may play a role in their development.

Fibroadenomas are generally not painful, although some women may experience discomfort or tenderness, especially before their menstrual period. In most cases, fibroadenomas do not require treatment and can be monitored with regular breast exams and imaging studies such as mammography or ultrasound. However, if a fibroadenoma grows larger or becomes uncomfortable, it may be removed through a surgical procedure.

Breast neoplasms refer to abnormal growths in the breast tissue that can be benign or malignant. Benign breast neoplasms are non-cancerous tumors or growths, while malignant breast neoplasms are cancerous tumors that can invade surrounding tissues and spread to other parts of the body.

Breast neoplasms can arise from different types of cells in the breast, including milk ducts, milk sacs (lobules), or connective tissue. The most common type of breast cancer is ductal carcinoma, which starts in the milk ducts and can spread to other parts of the breast and nearby structures.

Breast neoplasms are usually detected through screening methods such as mammography, ultrasound, or MRI, or through self-examination or clinical examination. Treatment options for breast neoplasms depend on several factors, including the type and stage of the tumor, the patient's age and overall health, and personal preferences. Treatment may include surgery, radiation therapy, chemotherapy, hormone therapy, or targeted therapy.

Adenofibroma is a rare, benign tumor that occurs most commonly in the salivary glands. It is composed of both glandular tissue (adeno-) and fibrous tissue (-fibroma). These tumors are slow-growing and typically do not spread to other parts of the body.

Adenofibromas can also occur in other areas of the body, such as the skin, where they may be referred to as "fibroepithelial polyps" or "skin tags." In general, adenofibromas are not cancerous and can often be removed surgically. However, it is important to have any new growths or lumps evaluated by a healthcare professional to determine the appropriate course of treatment.

Carcinoma, ductal, breast is a type of breast cancer that begins in the milk ducts (the tubes that carry milk from the lobules of the breast to the nipple). It is called "ductal" because it starts in the cells that line the milk ducts. Ductal carcinoma can be further classified as either non-invasive or invasive, based on whether the cancer cells are confined to the ducts or have spread beyond them into the surrounding breast tissue.

Non-invasive ductal carcinoma (also known as intraductal carcinoma or ductal carcinoma in situ) is a condition where abnormal cells have been found in the lining of the milk ducts, but they have not spread outside of the ducts. These cells have the potential to become invasive and spread to other parts of the breast or body if left untreated.

Invasive ductal carcinoma (IDC) is a type of breast cancer that starts in a milk duct and then grows into the surrounding breast tissue. From there, it can spread to other parts of the body through the bloodstream and lymphatic system. IDC is the most common form of breast cancer, accounting for about 80% of all cases.

Symptoms of ductal carcinoma may include a lump or thickening in the breast, changes in the size or shape of the breast, dimpling or puckering of the skin on the breast, nipple discharge (especially if it is clear or bloody), and/or redness or scaling of the nipple or breast skin. However, many cases of ductal carcinoma are detected through mammography before any symptoms develop.

Treatment for ductal carcinoma depends on several factors, including the stage and grade of the cancer, as well as the patient's overall health and personal preferences. Treatment options may include surgery (such as a lumpectomy or mastectomy), radiation therapy, chemotherapy, hormone therapy, and/or targeted therapies.

Mammography is defined as a specialized medical imaging technique used to create detailed X-ray images of the breast tissue. It's primarily used as a screening tool to detect early signs of breast cancer in women who have no symptoms or complaints, as well as a diagnostic tool for further evaluation of abnormalities detected by other imaging techniques or during a clinical breast exam.

There are two primary types of mammography: film-screen mammography and digital mammography. Film-screen mammography uses traditional X-ray films to capture the images, while digital mammography utilizes digital detectors to convert X-rays into electronic signals, which are then displayed on a computer screen. Digital mammography offers several advantages over film-screen mammography, including lower radiation doses, improved image quality, and the ability to manipulate and enhance the images for better interpretation.

Mammography plays a crucial role in reducing breast cancer mortality by enabling early detection and treatment of this disease. Regular mammography screenings are recommended for women over a certain age (typically starting at age 40 or 50, depending on individual risk factors) to increase the chances of detecting breast cancer at an early stage when it is most treatable.

Hyperplasia is a medical term that refers to an abnormal increase in the number of cells in an organ or tissue, leading to an enlargement of the affected area. It's a response to various stimuli such as hormones, chronic irritation, or inflammation. Hyperplasia can be physiological, like the growth of breast tissue during pregnancy, or pathological, like in the case of benign or malignant tumors. The process is generally reversible if the stimulus is removed. It's important to note that hyperplasia itself is not cancerous, but some forms of hyperplasia can increase the risk of developing cancer over time.

Intraductal carcinoma, noninfiltrating is a medical term used to describe a type of breast cancer that is confined to the milk ducts of the breast. It is also sometimes referred to as ductal carcinoma in situ (DCIS). Noninfiltrating means that the cancer cells have not spread beyond the ducts into the surrounding breast tissue or elsewhere in the body.

In this type of cancer, abnormal cells line the milk ducts and fill the inside of the ducts. These abnormal cells may look like cancer cells under a microscope, but they have not grown through the walls of the ducts into the surrounding breast tissue. However, if left untreated, noninfiltrating intraductal carcinoma can progress to an invasive form of breast cancer where the cancer cells spread beyond the milk ducts and invade the surrounding breast tissue.

It is important to note that while noninfiltrating intraductal carcinoma is considered a precancerous condition, it still requires medical treatment to prevent the development of invasive breast cancer. Treatment options may include surgery, radiation therapy, or hormone therapy, depending on the size and location of the tumor and other individual factors.

A breast cyst is a fluid-filled sac that forms within the breast tissue. It is a common, benign (non-cancerous) condition and can affect people of any age, but it is more commonly found in women between the ages of 35 and 50. Breast cysts can vary in size and may be asymptomatic or cause discomfort or pain, especially just before menstruation.

Breast cysts are usually diagnosed through a physical examination, breast ultrasound, or mammography. In some cases, a fine-needle aspiration (FNA) may be performed to drain the fluid from the cyst and confirm the diagnosis. If the cyst is small, causes no symptoms, and appears benign on imaging studies, then further treatment may not be necessary. However, if the cyst is large, painful, or has concerning features on imaging studies, then additional diagnostic tests or drainage procedures may be recommended.

It's important to note that while breast cysts are generally harmless, they can sometimes mimic the symptoms of breast cancer. Therefore, any new or unusual changes in the breast should be evaluated by a healthcare professional.

A nipple is a small projection or tubular structure located at the center of the areola, which is the darker circle of skin surrounding the nipple on the breast. The primary function of the nipple is to provide a pathway for milk flow from the mammary glands during lactation in females.

The nipple contains smooth muscle fibers that contract and cause the nipple to become erect when stimulated, such as during sexual arousal or cold temperatures. Nipples can come in various shapes, sizes, and colors, and some individuals may have inverted or flat nipples. It is essential to monitor any changes in the appearance or sensation of the nipples, as these could be indicative of underlying medical conditions, such as breast cancer.

Menopause is a natural biological process that typically occurs in women in their mid-40s to mid-50s. It marks the end of menstrual cycles and fertility, defined as the absence of menstruation for 12 consecutive months. This transition period can last several years and is often accompanied by various physical and emotional symptoms such as hot flashes, night sweats, mood changes, sleep disturbances, and vaginal dryness. The hormonal fluctuations during this time, particularly the decrease in estrogen levels, contribute to these symptoms. It's essential to monitor and manage these symptoms to maintain overall health and well-being during this phase of life.

Carcinoma in situ is a medical term used to describe the earliest stage of cancer, specifically a type of cancer that begins in the epithelial tissue, which is the tissue that lines the outer surfaces of organs and body structures. In this stage, the cancer cells are confined to the layer of cells where they first developed and have not spread beyond that layer into the surrounding tissues or organs.

Carcinoma in situ can occur in various parts of the body, including the skin, cervix, breast, lung, prostate, bladder, and other areas. It is often detected through routine screening tests, such as Pap smears for cervical cancer or mammograms for breast cancer.

While carcinoma in situ is not invasive, it can still be a serious condition because it has the potential to develop into an invasive cancer if left untreated. Treatment options for carcinoma in situ may include surgery, radiation therapy, or other forms of treatment, depending on the location and type of cancer. It is important to consult with a healthcare provider to determine the best course of action for each individual case.

A precancerous condition, also known as a premalignant condition, is a state of abnormal cellular growth and development that has a higher-than-normal potential to progress into cancer. These conditions are characterized by the presence of certain anomalies in the cells, such as dysplasia (abnormal changes in cell shape or size), which can indicate an increased risk for malignant transformation.

It is important to note that not all precancerous conditions will eventually develop into cancer, and some may even regress on their own. However, individuals with precancerous conditions are often at a higher risk of developing cancer compared to the general population. Regular monitoring and appropriate medical interventions, if necessary, can help manage this risk and potentially prevent or detect cancer at an early stage when it is more treatable.

Examples of precancerous conditions include:

1. Dysplasia in the cervix (cervical intraepithelial neoplasia or CIN)
2. Atypical ductal hyperplasia or lobular hyperplasia in the breast
3. Actinic keratosis on the skin
4. Leukoplakia in the mouth
5. Barrett's esophagus in the digestive tract

Regular medical check-ups, screenings, and lifestyle modifications are crucial for individuals with precancerous conditions to monitor their health and reduce the risk of cancer development.

Carcinoma, lobular is a type of breast cancer that begins in the milk-producing glands (lobules) of the breast. It can be either invasive or non-invasive (in situ). Invasive lobular carcinoma (ILC) occurs when the cancer cells break through the wall of the lobule and invade the surrounding breast tissue, and can potentially spread to other parts of the body. Non-invasive lobular carcinoma (LCIS), on the other hand, refers to the presence of abnormal cells within the lobule that have not invaded nearby breast tissue.

ILC is usually detected as a mass or thickening in the breast, and it may not cause any symptoms or show up on mammograms until it has grown quite large. It tends to grow more slowly than some other types of breast cancer, but it can still be serious and require extensive treatment. LCIS does not typically cause any symptoms and is usually found during a biopsy performed for another reason.

Treatment options for carcinoma, lobular depend on several factors, including the stage of the cancer, the patient's overall health, and their personal preferences. Treatment may include surgery, radiation therapy, chemotherapy, hormone therapy, or targeted therapy. Regular follow-up care is essential to monitor for recurrence or the development of new cancers.

Medical Definition:

"Risk factors" are any attribute, characteristic or exposure of an individual that increases the likelihood of developing a disease or injury. They can be divided into modifiable and non-modifiable risk factors. Modifiable risk factors are those that can be changed through lifestyle choices or medical treatment, while non-modifiable risk factors are inherent traits such as age, gender, or genetic predisposition. Examples of modifiable risk factors include smoking, alcohol consumption, physical inactivity, and unhealthy diet, while non-modifiable risk factors include age, sex, and family history. It is important to note that having a risk factor does not guarantee that a person will develop the disease, but rather indicates an increased susceptibility.

A needle biopsy is a medical procedure in which a thin, hollow needle is used to remove a small sample of tissue from a suspicious or abnormal area of the body. The tissue sample is then examined under a microscope to check for cancer cells or other abnormalities. Needle biopsies are often used to diagnose lumps or masses that can be felt through the skin, but they can also be guided by imaging techniques such as ultrasound, CT scan, or MRI to reach areas that cannot be felt. There are several types of needle biopsy procedures, including fine-needle aspiration (FNA) and core needle biopsy. FNA uses a thin needle and gentle suction to remove fluid and cells from the area, while core needle biopsy uses a larger needle to remove a small piece of tissue. The type of needle biopsy used depends on the location and size of the abnormal area, as well as the reason for the procedure.

A biopsy is a medical procedure in which a small sample of tissue is taken from the body to be examined under a microscope for the presence of disease. This can help doctors diagnose and monitor various medical conditions, such as cancer, infections, or autoimmune disorders. The type of biopsy performed will depend on the location and nature of the suspected condition. Some common types of biopsies include:

1. Incisional biopsy: In this procedure, a surgeon removes a piece of tissue from an abnormal area using a scalpel or other surgical instrument. This type of biopsy is often used when the lesion is too large to be removed entirely during the initial biopsy.

2. Excisional biopsy: An excisional biopsy involves removing the entire abnormal area, along with a margin of healthy tissue surrounding it. This technique is typically employed for smaller lesions or when cancer is suspected.

3. Needle biopsy: A needle biopsy uses a thin, hollow needle to extract cells or fluid from the body. There are two main types of needle biopsies: fine-needle aspiration (FNA) and core needle biopsy. FNA extracts loose cells, while a core needle biopsy removes a small piece of tissue.

4. Punch biopsy: In a punch biopsy, a round, sharp tool is used to remove a small cylindrical sample of skin tissue. This type of biopsy is often used for evaluating rashes or other skin abnormalities.

5. Shave biopsy: During a shave biopsy, a thin slice of tissue is removed from the surface of the skin using a sharp razor-like instrument. This technique is typically used for superficial lesions or growths on the skin.

After the biopsy sample has been collected, it is sent to a laboratory where a pathologist will examine the tissue under a microscope and provide a diagnosis based on their findings. The results of the biopsy can help guide further treatment decisions and determine the best course of action for managing the patient's condition.

A case-control study is an observational research design used to identify risk factors or causes of a disease or health outcome. In this type of study, individuals with the disease or condition (cases) are compared with similar individuals who do not have the disease or condition (controls). The exposure history or other characteristics of interest are then compared between the two groups to determine if there is an association between the exposure and the disease.

Case-control studies are often used when it is not feasible or ethical to conduct a randomized controlled trial, as they can provide valuable insights into potential causes of diseases or health outcomes in a relatively short period of time and at a lower cost than other study designs. However, because case-control studies rely on retrospective data collection, they are subject to biases such as recall bias and selection bias, which can affect the validity of the results. Therefore, it is important to carefully design and conduct case-control studies to minimize these potential sources of bias.

Estrogen receptors (ERs) are a type of nuclear receptor protein that are expressed in various tissues and cells throughout the body. They play a critical role in the regulation of gene expression and cellular responses to the hormone estrogen. There are two main subtypes of ERs, ERα and ERβ, which have distinct molecular structures, expression patterns, and functions.

ERs function as transcription factors that bind to specific DNA sequences called estrogen response elements (EREs) in the promoter regions of target genes. When estrogen binds to the ER, it causes a conformational change in the receptor that allows it to recruit co-activator proteins and initiate transcription of the target gene. This process can lead to a variety of cellular responses, including changes in cell growth, differentiation, and metabolism.

Estrogen receptors are involved in a wide range of physiological processes, including the development and maintenance of female reproductive tissues, bone homeostasis, cardiovascular function, and cognitive function. They have also been implicated in various pathological conditions, such as breast cancer, endometrial cancer, and osteoporosis. As a result, ERs are an important target for therapeutic interventions in these diseases.

Mammary ultrasonography, also known as breast ultrasound, is a non-invasive diagnostic imaging technique that uses high-frequency sound waves to produce detailed images of the internal structures of the breast tissue. It is often used in conjunction with mammography to help identify and characterize breast abnormalities, such as lumps, cysts, or tumors, and to guide biopsy procedures.

Ultrasonography is particularly useful for evaluating palpable masses, assessing the integrity of breast implants, and distinguishing between solid and fluid-filled lesions. It is also a valuable tool for monitoring treatment response in patients with known breast cancer. Because it does not use radiation like mammography, mammary ultrasonography is considered safe and can be repeated as often as necessary. However, its effectiveness is highly dependent on the skill and experience of the sonographer performing the examination.

Breastfeeding is the process of providing nutrition to an infant or young child by feeding them breast milk directly from the mother's breast. It is also known as nursing. Breast milk is the natural food for newborns and infants, and it provides all the nutrients they need to grow and develop during the first six months of life.

Breastfeeding has many benefits for both the mother and the baby. For the baby, breast milk contains antibodies that help protect against infections and diseases, and it can also reduce the risk of sudden infant death syndrome (SIDS), allergies, and obesity. For the mother, breastfeeding can help her lose weight after pregnancy, reduce the risk of certain types of cancer, and promote bonding with her baby.

Breastfeeding is recommended exclusively for the first six months of an infant's life, and then continued along with appropriate complementary foods until the child is at least two years old or beyond. However, it is important to note that every mother and baby pair is unique, and what works best for one may not work as well for another. It is recommended that mothers consult with their healthcare provider to determine the best feeding plan for themselves and their baby.

Palpation is a medical examination technique in which a healthcare professional uses their hands to feel the size, shape, and consistency of body parts, including organs, tissues, and bones. It is used to assess the patient's overall health, identify any abnormalities or areas of pain, monitor healing and disease progression, and guide diagnostic and treatment decisions.

During palpation, the healthcare professional applies gentle pressure with their fingers or hands to specific areas of the body, feeling for any changes in texture, temperature, moisture, or movement. The technique can be used to assess various bodily systems, including the cardiovascular, respiratory, gastrointestinal, musculoskeletal, and nervous systems.

Palpation is a valuable tool in physical examinations because it is non-invasive, relatively quick, and cost-effective. It can provide important information that helps healthcare professionals make accurate diagnoses and develop effective treatment plans for their patients.

Mastitis is a medical condition characterized by inflammation of the breast tissue, usually caused by an infection. It typically occurs in breastfeeding women, when bacteria from the baby's mouth enter the milk ducts through a cracked or damaged nipple, leading to infection and inflammation. However, mastitis can also occur in non-breastfeeding women, often as a result of blocked milk ducts or milk remaining in the breast after weaning.

Symptoms of mastitis may include breast pain, tenderness, swelling, warmth, redness, and fever. In some cases, pus or blood may be present in the breast milk. If left untreated, mastitis can lead to more severe complications such as abscess formation. Treatment typically involves antibiotics to clear the infection, pain relief medication, and continued breastfeeding or pumping to prevent further blockage of the milk ducts.

Progesterone receptors (PRs) are a type of nuclear receptor proteins that are expressed in the nucleus of certain cells and play a crucial role in the regulation of various physiological processes, including the menstrual cycle, embryo implantation, and maintenance of pregnancy. These receptors bind to the steroid hormone progesterone, which is produced primarily in the ovaries during the second half of the menstrual cycle and during pregnancy.

Once progesterone binds to the PRs, it triggers a series of molecular events that lead to changes in gene expression, ultimately resulting in the modulation of various cellular functions. Progesterone receptors exist in two main isoforms, PR-A and PR-B, which differ in their size, structure, and transcriptional activity. Both isoforms are expressed in a variety of tissues, including the female reproductive tract, breast, brain, and bone.

Abnormalities in progesterone receptor expression or function have been implicated in several pathological conditions, such as uterine fibroids, endometriosis, breast cancer, and osteoporosis. Therefore, understanding the molecular mechanisms underlying PR signaling is essential for developing novel therapeutic strategies to treat these disorders.

A mastectomy is a surgical procedure where the entire breast tissue along with the nipple and areola is removed. This is usually performed to treat or prevent breast cancer. There are different types of mastectomies, such as simple (total) mastectomy, skin-sparing mastectomy, and nipple-sparing mastectomy. The choice of procedure depends on various factors including the type and stage of cancer, patient's preference, and the recommendation of the surgical team.

Tumor markers are substances that can be found in the body and their presence can indicate the presence of certain types of cancer or other conditions. Biological tumor markers refer to those substances that are produced by cancer cells or by other cells in response to cancer or certain benign (non-cancerous) conditions. These markers can be found in various bodily fluids such as blood, urine, or tissue samples.

Examples of biological tumor markers include:

1. Proteins: Some tumor markers are proteins that are produced by cancer cells or by other cells in response to the presence of cancer. For example, prostate-specific antigen (PSA) is a protein produced by normal prostate cells and in higher amounts by prostate cancer cells.
2. Genetic material: Tumor markers can also include genetic material such as DNA, RNA, or microRNA that are shed by cancer cells into bodily fluids. For example, circulating tumor DNA (ctDNA) is genetic material from cancer cells that can be found in the bloodstream.
3. Metabolites: Tumor markers can also include metabolic products produced by cancer cells or by other cells in response to cancer. For example, lactate dehydrogenase (LDH) is an enzyme that is released into the bloodstream when cancer cells break down glucose for energy.

It's important to note that tumor markers are not specific to cancer and can be elevated in non-cancerous conditions as well. Therefore, they should not be used alone to diagnose cancer but rather as a tool in conjunction with other diagnostic tests and clinical evaluations.

Neoplasm invasiveness is a term used in pathology and oncology to describe the aggressive behavior of cancer cells as they invade surrounding tissues and organs. This process involves the loss of cell-to-cell adhesion, increased motility and migration, and the ability of cancer cells to degrade the extracellular matrix (ECM) through the production of enzymes such as matrix metalloproteinases (MMPs).

Invasive neoplasms are cancers that have spread beyond the original site where they first developed and have infiltrated adjacent tissues or structures. This is in contrast to non-invasive or in situ neoplasms, which are confined to the epithelial layer where they originated and have not yet invaded the underlying basement membrane.

The invasiveness of a neoplasm is an important prognostic factor in cancer diagnosis and treatment, as it can indicate the likelihood of metastasis and the potential effectiveness of various therapies. In general, more invasive cancers are associated with worse outcomes and require more aggressive treatment approaches.

"Age factors" refer to the effects, changes, or differences that age can have on various aspects of health, disease, and medical care. These factors can encompass a wide range of issues, including:

1. Physiological changes: As people age, their bodies undergo numerous physical changes that can affect how they respond to medications, illnesses, and medical procedures. For example, older adults may be more sensitive to certain drugs or have weaker immune systems, making them more susceptible to infections.
2. Chronic conditions: Age is a significant risk factor for many chronic diseases, such as heart disease, diabetes, cancer, and arthritis. As a result, age-related medical issues are common and can impact treatment decisions and outcomes.
3. Cognitive decline: Aging can also lead to cognitive changes, including memory loss and decreased decision-making abilities. These changes can affect a person's ability to understand and comply with medical instructions, leading to potential complications in their care.
4. Functional limitations: Older adults may experience physical limitations that impact their mobility, strength, and balance, increasing the risk of falls and other injuries. These limitations can also make it more challenging for them to perform daily activities, such as bathing, dressing, or cooking.
5. Social determinants: Age-related factors, such as social isolation, poverty, and lack of access to transportation, can impact a person's ability to obtain necessary medical care and affect their overall health outcomes.

Understanding age factors is critical for healthcare providers to deliver high-quality, patient-centered care that addresses the unique needs and challenges of older adults. By taking these factors into account, healthcare providers can develop personalized treatment plans that consider a person's age, physical condition, cognitive abilities, and social circumstances.

In the context of medicine, risk is the probability or likelihood of an adverse health effect or the occurrence of a negative event related to treatment or exposure to certain hazards. It is usually expressed as a ratio or percentage and can be influenced by various factors such as age, gender, lifestyle, genetics, and environmental conditions. Risk assessment involves identifying, quantifying, and prioritizing risks to make informed decisions about prevention, mitigation, or treatment strategies.

Postmenopause is a stage in a woman's life that follows 12 months after her last menstrual period (menopause) has occurred. During this stage, the ovaries no longer release eggs and produce lower levels of estrogen and progesterone hormones. The reduced levels of these hormones can lead to various physical changes and symptoms, such as hot flashes, vaginal dryness, and mood changes. Postmenopause is also associated with an increased risk of certain health conditions, including osteoporosis and heart disease. It's important for women in postmenopause to maintain a healthy lifestyle, including regular exercise, a balanced diet, and routine medical check-ups to monitor their overall health and manage any potential risks.

Estrogens are a group of steroid hormones that are primarily responsible for the development and regulation of female sexual characteristics and reproductive functions. They are also present in lower levels in males. The main estrogen hormone is estradiol, which plays a key role in promoting the growth and development of the female reproductive system, including the uterus, fallopian tubes, and breasts. Estrogens also help regulate the menstrual cycle, maintain bone density, and have important effects on the cardiovascular system, skin, hair, and cognitive function.

Estrogens are produced primarily by the ovaries in women, but they can also be produced in smaller amounts by the adrenal glands and fat cells. In men, estrogens are produced from the conversion of testosterone, the primary male sex hormone, through a process called aromatization.

Estrogen levels vary throughout a woman's life, with higher levels during reproductive years and lower levels after menopause. Estrogen therapy is sometimes used to treat symptoms of menopause, such as hot flashes and vaginal dryness, or to prevent osteoporosis in postmenopausal women. However, estrogen therapy also carries risks, including an increased risk of certain cancers, blood clots, and stroke, so it is typically recommended only for women who have a high risk of these conditions.

In medical terms, parity refers to the number of times a woman has given birth to a viable fetus, usually defined as a pregnancy that reaches at least 20 weeks' gestation. It is often used in obstetrics and gynecology to describe a woman's childbearing history and to assess potential risks associated with childbirth.

Parity is typically categorized as follows:

* Nulliparous: A woman who has never given birth to a viable fetus.
* Primiparous: A woman who has given birth to one viable fetus.
* Multiparous: A woman who has given birth to more than one viable fetus.

In some cases, parity may also consider the number of pregnancies that resulted in stillbirths or miscarriages, although this is not always the case. It's important to note that parity does not necessarily reflect the total number of pregnancies a woman has had, only those that resulted in viable births.

Prospective studies, also known as longitudinal studies, are a type of cohort study in which data is collected forward in time, following a group of individuals who share a common characteristic or exposure over a period of time. The researchers clearly define the study population and exposure of interest at the beginning of the study and follow up with the participants to determine the outcomes that develop over time. This type of study design allows for the investigation of causal relationships between exposures and outcomes, as well as the identification of risk factors and the estimation of disease incidence rates. Prospective studies are particularly useful in epidemiology and medical research when studying diseases with long latency periods or rare outcomes.

Breast neoplasms in males refer to abnormal growths or tumors in the male breast tissue. These neoplasms can be benign (non-cancerous) or malignant (cancerous). While breast cancer is much less common in men than in women, it can still occur and should be taken seriously.

The most common type of breast cancer in men is invasive ductal carcinoma, which starts in the milk ducts and spreads to surrounding tissue. Other types of breast cancer that can occur in men include inflammatory breast cancer, lobular carcinoma, and Paget's disease of the nipple.

Risk factors for developing male breast cancer include age (most cases are diagnosed after age 60), family history of breast cancer, genetic mutations such as BRCA1 or BRCA2, radiation exposure, obesity, liver disease, and testicular conditions such as undescended testicles.

Symptoms of male breast neoplasms may include a painless lump in the breast tissue, skin changes such as dimpling or redness, nipple discharge, or a retracted nipple. If you notice any of these symptoms, it is important to consult with a healthcare professional for further evaluation and treatment.

Menstruation is the regular, cyclical shedding of the uterine lining (endometrium) in women and female individuals of reproductive age, accompanied by the discharge of blood and other materials from the vagina. It typically occurs every 21 to 35 days and lasts for approximately 2-7 days. This process is a part of the menstrual cycle, which is under the control of hormonal fluctuations involving follicle-stimulating hormone (FSH), luteinizing hormone (LH), estrogen, and progesterone.

The menstrual cycle can be divided into three main phases:

1. Menstruation phase: The beginning of the cycle is marked by the start of menstrual bleeding, which signals the breakdown and shedding of the endometrium due to the absence of pregnancy and low levels of estrogen and progesterone. This phase typically lasts for 2-7 days.

2. Proliferative phase: After menstruation, under the influence of rising estrogen levels, the endometrium starts to thicken and regenerate. The uterine lining becomes rich in blood vessels and glands, preparing for a potential pregnancy. This phase lasts from day 5 until around day 14 of an average 28-day cycle.

3. Secretory phase: Following ovulation (release of an egg from the ovaries), which usually occurs around day 14, increased levels of progesterone cause further thickening and maturation of the endometrium. The glands in the lining produce nutrients to support a fertilized egg. If pregnancy does not occur, both estrogen and progesterone levels will drop, leading to menstruation and the start of a new cycle.

Understanding menstruation is essential for monitoring reproductive health, identifying potential issues such as irregular periods or menstrual disorders, and planning family planning strategies.

Carcinoma is a type of cancer that develops from epithelial cells, which are the cells that line the inner and outer surfaces of the body. These cells cover organs, glands, and other structures within the body. Carcinomas can occur in various parts of the body, including the skin, lungs, breasts, prostate, colon, and pancreas. They are often characterized by the uncontrolled growth and division of abnormal cells that can invade surrounding tissues and spread to other parts of the body through a process called metastasis. Carcinomas can be further classified based on their appearance under a microscope, such as adenocarcinoma, squamous cell carcinoma, and basal cell carcinoma.

Premenopause is not a formal medical term, but it's often informally used to refer to the time period in a woman's life leading up to menopause. During this stage, which can last for several years, hormonal changes begin to occur in preparation for menopause. The ovaries start to produce less estrogen and progesterone, which can lead to various symptoms such as irregular periods, hot flashes, mood swings, and sleep disturbances. However, it's important to note that not all women will experience these symptoms.

The official medical term for the stage when a woman's period becomes irregular and less frequent, but hasn't stopped completely, is perimenopause. This stage typically lasts from two to eight years and ends with menopause, which is defined as the point when a woman has not had a period for 12 consecutive months. After menopause, women enter postmenopause.

Body fluids refer to the various liquids that can be found within and circulating throughout the human body. These fluids include, but are not limited to:

1. Blood: A fluid that carries oxygen, nutrients, hormones, and waste products throughout the body via the cardiovascular system. It is composed of red and white blood cells suspended in plasma.
2. Lymph: A clear-to-white fluid that circulates through the lymphatic system, helping to remove waste products, bacteria, and damaged cells from tissues while also playing a crucial role in the immune system.
3. Interstitial fluid: Also known as tissue fluid or extracellular fluid, it is the fluid that surrounds the cells in the body's tissues, allowing for nutrient exchange and waste removal between cells and blood vessels.
4. Cerebrospinal fluid (CSF): A clear, colorless fluid that circulates around the brain and spinal cord, providing protection, cushioning, and nutrients to these delicate structures while also removing waste products.
5. Pleural fluid: A small amount of lubricating fluid found in the pleural space between the lungs and the chest wall, allowing for smooth movement during respiration.
6. Pericardial fluid: A small amount of lubricating fluid found within the pericardial sac surrounding the heart, reducing friction during heart contractions.
7. Synovial fluid: A viscous, lubricating fluid found in joint spaces, allowing for smooth movement and protecting the articular cartilage from wear and tear.
8. Urine: A waste product produced by the kidneys, consisting of water, urea, creatinine, and various ions, which is excreted through the urinary system.
9. Gastrointestinal secretions: Fluids produced by the digestive system, including saliva, gastric juice, bile, pancreatic juice, and intestinal secretions, which aid in digestion, absorption, and elimination of food particles.
10. Reproductive fluids: Secretions from the male (semen) and female (cervical mucus, vaginal lubrication) reproductive systems that facilitate fertilization and reproduction.

Prognosis is a medical term that refers to the prediction of the likely outcome or course of a disease, including the chances of recovery or recurrence, based on the patient's symptoms, medical history, physical examination, and diagnostic tests. It is an important aspect of clinical decision-making and patient communication, as it helps doctors and patients make informed decisions about treatment options, set realistic expectations, and plan for future care.

Prognosis can be expressed in various ways, such as percentages, categories (e.g., good, fair, poor), or survival rates, depending on the nature of the disease and the available evidence. However, it is important to note that prognosis is not an exact science and may vary depending on individual factors, such as age, overall health status, and response to treatment. Therefore, it should be used as a guide rather than a definitive forecast.

Menarche is the first occurrence of menstruation in a female adolescent, indicating the onset of reproductive capability. It usually happens between the ages of 10 and 16, with an average age of around 12-13 years old, but it can vary widely from one individual to another due to various factors such as genetics, nutrition, and overall health.

Achieving menarche is a significant milestone in a girl's life, signaling the transition from childhood to adolescence. It is also an essential indicator of sexual maturation, often used in conjunction with other physical changes to assess pubertal development. However, it does not necessarily mean that a girl is psychologically or emotionally prepared for menstruation and sexual activity; therefore, appropriate education and support are crucial during this period.

Immunohistochemistry (IHC) is a technique used in pathology and laboratory medicine to identify specific proteins or antigens in tissue sections. It combines the principles of immunology and histology to detect the presence and location of these target molecules within cells and tissues. This technique utilizes antibodies that are specific to the protein or antigen of interest, which are then tagged with a detection system such as a chromogen or fluorophore. The stained tissue sections can be examined under a microscope, allowing for the visualization and analysis of the distribution and expression patterns of the target molecule in the context of the tissue architecture. Immunohistochemistry is widely used in diagnostic pathology to help identify various diseases, including cancer, infectious diseases, and immune-mediated disorders.

Neoplasm metastasis is the spread of cancer cells from the primary site (where the original or primary tumor formed) to other places in the body. This happens when cancer cells break away from the original (primary) tumor and enter the bloodstream or lymphatic system. The cancer cells can then travel to other parts of the body and form new tumors, called secondary tumors or metastases.

Metastasis is a key feature of malignant neoplasms (cancers), and it is one of the main ways that cancer can cause harm in the body. The metastatic tumors may continue to grow and may cause damage to the organs and tissues where they are located. They can also release additional cancer cells into the bloodstream or lymphatic system, leading to further spread of the cancer.

The metastatic tumors are named based on the location where they are found, as well as the type of primary cancer. For example, if a patient has a primary lung cancer that has metastasized to the liver, the metastatic tumor would be called a liver metastasis from lung cancer.

It is important to note that the presence of metastases can significantly affect a person's prognosis and treatment options. In general, metastatic cancer is more difficult to treat than cancer that has not spread beyond its original site. However, there are many factors that can influence a person's prognosis and response to treatment, so it is important for each individual to discuss their specific situation with their healthcare team.

A cohort study is a type of observational study in which a group of individuals who share a common characteristic or exposure are followed up over time to determine the incidence of a specific outcome or outcomes. The cohort, or group, is defined based on the exposure status (e.g., exposed vs. unexposed) and then monitored prospectively to assess for the development of new health events or conditions.

Cohort studies can be either prospective or retrospective in design. In a prospective cohort study, participants are enrolled and followed forward in time from the beginning of the study. In contrast, in a retrospective cohort study, researchers identify a cohort that has already been assembled through medical records, insurance claims, or other sources and then look back in time to assess exposure status and health outcomes.

Cohort studies are useful for establishing causality between an exposure and an outcome because they allow researchers to observe the temporal relationship between the two. They can also provide information on the incidence of a disease or condition in different populations, which can be used to inform public health policy and interventions. However, cohort studies can be expensive and time-consuming to conduct, and they may be subject to bias if participants are not representative of the population or if there is loss to follow-up.

Estrogen Replacement Therapy (ERT) is a medical treatment in which estrogen hormones are administered to replace the estrogen that is naturally produced by the ovaries but declines, especially during menopause. This therapy is often used to help manage symptoms of menopause such as hot flashes, night sweats, and vaginal dryness. It can also help prevent bone loss in postmenopausal women. ERT typically involves the use of estrogen alone, but in some cases, a combination of estrogen and progestin may be prescribed for women with a uterus to reduce the risk of endometrial cancer. However, ERT is associated with certain risks, including an increased risk of breast cancer, blood clots, and stroke, so it's important for women to discuss the potential benefits and risks with their healthcare provider before starting this therapy.

A cell line that is derived from tumor cells and has been adapted to grow in culture. These cell lines are often used in research to study the characteristics of cancer cells, including their growth patterns, genetic changes, and responses to various treatments. They can be established from many different types of tumors, such as carcinomas, sarcomas, and leukemias. Once established, these cell lines can be grown and maintained indefinitely in the laboratory, allowing researchers to conduct experiments and studies that would not be feasible using primary tumor cells. It is important to note that tumor cell lines may not always accurately represent the behavior of the original tumor, as they can undergo genetic changes during their time in culture.

Breast implants are medical devices that are inserted into the breast to enhance their size, shape, or fullness. They can also be used for breast reconstruction after a mastectomy or other medical treatments. Breast implants typically consist of a silicone shell filled with either saline (sterile saltwater) or silicone gel.

There are two main types of breast implants:

1. Saline-filled implants: These implants have a silicone outer shell that is filled with sterile saline solution after the implant has been inserted into the breast. This allows for some adjustment in the size and shape of the implant after surgery.
2. Silicone gel-filled implants: These implants have a silicone outer shell that is pre-filled with a cohesive silicone gel. The gel is designed to feel more like natural breast tissue than saline implants.

Breast implants come in various sizes, shapes, and textures, and the choice of implant will depend on several factors, including the patient's body type, desired outcome, and personal preference. It is important for patients considering breast implants to discuss their options with a qualified plastic surgeon who can help them make an informed decision based on their individual needs and goals.

The odds ratio (OR) is a statistical measure used in epidemiology and research to estimate the association between an exposure and an outcome. It represents the odds that an event will occur in one group versus the odds that it will occur in another group, assuming that all other factors are held constant.

In medical research, the odds ratio is often used to quantify the strength of the relationship between a risk factor (exposure) and a disease outcome. An OR of 1 indicates no association between the exposure and the outcome, while an OR greater than 1 suggests that there is a positive association between the two. Conversely, an OR less than 1 implies a negative association.

It's important to note that the odds ratio is not the same as the relative risk (RR), which compares the incidence rates of an outcome in two groups. While the OR can approximate the RR when the outcome is rare, they are not interchangeable and can lead to different conclusions about the association between an exposure and an outcome.

Cathepsin D is a lysosomal aspartic protease that plays a role in intracellular protein degradation and turnover. It is produced as an inactive precursor and is activated by cleavage into two subunits within the acidic environment of the lysosome. Cathepsin D is also known to be secreted by certain cells, where it can contribute to extracellular matrix remodeling and tissue degradation. In addition, abnormal levels or activity of cathepsin D have been implicated in various diseases, including cancer, neurodegenerative disorders, and infectious diseases.

"ErbB-2" is also known as "HER2" or "human epidermal growth factor receptor 2." It is a type of receptor tyrosine kinase (RTK) found on the surface of some cells. ErbB-2 does not bind to any known ligands, but it can form heterodimers with other ErbB family members, such as ErbB-3 and ErbB-4, which do have identified ligands. When a ligand binds to one of these receptors, it causes a conformational change that allows the ErbB-2 receptor to become activated through transphosphorylation. This activation triggers a signaling cascade that regulates cell growth, differentiation, and survival.

Overexpression or amplification of the ERBB2 gene, which encodes the ErbB-2 protein, is observed in approximately 20-30% of breast cancers and is associated with a more aggressive disease phenotype and poorer prognosis. Therefore, ErbB-2 has become an important target for cancer therapy, and several drugs that target this receptor have been developed, including trastuzumab (Herceptin), lapatinib (Tykerb), and pertuzumab (Perjeta).

Lymphatic metastasis is the spread of cancer cells from a primary tumor to distant lymph nodes through the lymphatic system. It occurs when malignant cells break away from the original tumor, enter the lymphatic vessels, and travel to nearby or remote lymph nodes. Once there, these cancer cells can multiply and form new tumors, leading to further progression of the disease. Lymphatic metastasis is a common way for many types of cancer to spread and can have significant implications for prognosis and treatment strategies.

Risk assessment in the medical context refers to the process of identifying, evaluating, and prioritizing risks to patients, healthcare workers, or the community related to healthcare delivery. It involves determining the likelihood and potential impact of adverse events or hazards, such as infectious diseases, medication errors, or medical devices failures, and implementing measures to mitigate or manage those risks. The goal of risk assessment is to promote safe and high-quality care by identifying areas for improvement and taking action to minimize harm.

Breast self-examination (BSE) is a procedure in which an individual manually checks their own breasts for any changes or abnormalities. The goal of BSE is to detect breast cancer or other breast abnormalities as early as possible. It involves looking at and feeling the breasts for any lumps, thickenings, or other changes in size, shape, or appearance.

The American Cancer Society recommends that women become familiar with how their breasts normally look and feel and report any changes to their healthcare provider. However, they do not recommend regular monthly BSE as a routine screening tool for breast cancer, as it has not been shown to reduce the risk of dying from breast cancer or improve survival rates. Instead, they recommend regular mammograms and clinical breast exams as the most effective ways to detect breast cancer early.

It's important to note that while BSE can help women become more familiar with their breasts and detect changes early, it should not replace regular medical check-ups and mammograms. Any concerns or changes in the breasts should be reported to a healthcare provider as soon as possible for further evaluation.

Proportional hazards models are a type of statistical analysis used in medical research to investigate the relationship between covariates (predictor variables) and survival times. The most common application of proportional hazards models is in the Cox regression model, which is named after its developer, Sir David Cox.

In a proportional hazards model, the hazard rate or risk of an event occurring at a given time is assumed to be proportional to the hazard rate of a reference group, after adjusting for the covariates. This means that the ratio of the hazard rates between any two individuals remains constant over time, regardless of their survival times.

Mathematically, the hazard function h(t) at time t for an individual with a set of covariates X can be expressed as:

h(t|X) = h0(t) \* exp(β1X1 + β2X2 + ... + βpXp)

where h0(t) is the baseline hazard function, X1, X2, ..., Xp are the covariates, and β1, β2, ..., βp are the regression coefficients that represent the effect of each covariate on the hazard rate.

The assumption of proportionality is crucial in the interpretation of the results from a Cox regression model. If the assumption is violated, then the estimated regression coefficients may be biased and misleading. Therefore, it is important to test for the proportional hazards assumption before interpreting the results of a Cox regression analysis.

Neoplasm staging is a systematic process used in medicine to describe the extent of spread of a cancer, including the size and location of the original (primary) tumor and whether it has metastasized (spread) to other parts of the body. The most widely accepted system for this purpose is the TNM classification system developed by the American Joint Committee on Cancer (AJCC) and the Union for International Cancer Control (UICC).

In this system, T stands for tumor, and it describes the size and extent of the primary tumor. N stands for nodes, and it indicates whether the cancer has spread to nearby lymph nodes. M stands for metastasis, and it shows whether the cancer has spread to distant parts of the body.

Each letter is followed by a number that provides more details about the extent of the disease. For example, a T1N0M0 cancer means that the primary tumor is small and has not spread to nearby lymph nodes or distant sites. The higher the numbers, the more advanced the cancer.

Staging helps doctors determine the most appropriate treatment for each patient and estimate the patient's prognosis. It is an essential tool for communication among members of the healthcare team and for comparing outcomes of treatments in clinical trials.

Sensitivity and specificity are statistical measures used to describe the performance of a diagnostic test or screening tool in identifying true positive and true negative results.

* Sensitivity refers to the proportion of people who have a particular condition (true positives) who are correctly identified by the test. It is also known as the "true positive rate" or "recall." A highly sensitive test will identify most or all of the people with the condition, but may also produce more false positives.
* Specificity refers to the proportion of people who do not have a particular condition (true negatives) who are correctly identified by the test. It is also known as the "true negative rate." A highly specific test will identify most or all of the people without the condition, but may also produce more false negatives.

In medical testing, both sensitivity and specificity are important considerations when evaluating a diagnostic test. High sensitivity is desirable for screening tests that aim to identify as many cases of a condition as possible, while high specificity is desirable for confirmatory tests that aim to rule out the condition in people who do not have it.

It's worth noting that sensitivity and specificity are often influenced by factors such as the prevalence of the condition in the population being tested, the threshold used to define a positive result, and the reliability and validity of the test itself. Therefore, it's important to consider these factors when interpreting the results of a diagnostic test.

A neoplasm is a tumor or growth that is formed by an abnormal and excessive proliferation of cells, which can be benign or malignant. Neoplasm proteins are therefore any proteins that are expressed or produced in these neoplastic cells. These proteins can play various roles in the development, progression, and maintenance of neoplasms.

Some neoplasm proteins may contribute to the uncontrolled cell growth and division seen in cancer, such as oncogenic proteins that promote cell cycle progression or inhibit apoptosis (programmed cell death). Others may help the neoplastic cells evade the immune system, allowing them to proliferate undetected. Still others may be involved in angiogenesis, the formation of new blood vessels that supply the tumor with nutrients and oxygen.

Neoplasm proteins can also serve as biomarkers for cancer diagnosis, prognosis, or treatment response. For example, the presence or level of certain neoplasm proteins in biological samples such as blood or tissue may indicate the presence of a specific type of cancer, help predict the likelihood of cancer recurrence, or suggest whether a particular therapy will be effective.

Overall, understanding the roles and behaviors of neoplasm proteins can provide valuable insights into the biology of cancer and inform the development of new diagnostic and therapeutic strategies.

In epidemiology, the incidence of a disease is defined as the number of new cases of that disease within a specific population over a certain period of time. It is typically expressed as a rate, with the number of new cases in the numerator and the size of the population at risk in the denominator. Incidence provides information about the risk of developing a disease during a given time period and can be used to compare disease rates between different populations or to monitor trends in disease occurrence over time.

In the field of medicine, "time factors" refer to the duration of symptoms or time elapsed since the onset of a medical condition, which can have significant implications for diagnosis and treatment. Understanding time factors is crucial in determining the progression of a disease, evaluating the effectiveness of treatments, and making critical decisions regarding patient care.

For example, in stroke management, "time is brain," meaning that rapid intervention within a specific time frame (usually within 4.5 hours) is essential to administering tissue plasminogen activator (tPA), a clot-busting drug that can minimize brain damage and improve patient outcomes. Similarly, in trauma care, the "golden hour" concept emphasizes the importance of providing definitive care within the first 60 minutes after injury to increase survival rates and reduce morbidity.

Time factors also play a role in monitoring the progression of chronic conditions like diabetes or heart disease, where regular follow-ups and assessments help determine appropriate treatment adjustments and prevent complications. In infectious diseases, time factors are crucial for initiating antibiotic therapy and identifying potential outbreaks to control their spread.

Overall, "time factors" encompass the significance of recognizing and acting promptly in various medical scenarios to optimize patient outcomes and provide effective care.

Tamoxifen is a selective estrogen receptor modulator (SERM) medication that is primarily used in the treatment and prevention of breast cancer. It works by blocking the action of estrogen in the body, particularly in breast tissue. This can help to stop or slow the growth of hormone-sensitive tumors.

Tamoxifen has been approved by the U.S. Food and Drug Administration (FDA) for use in both men and women. It is often used as a part of adjuvant therapy, which is treatment given after surgery to reduce the risk of cancer recurrence. Tamoxifen may also be used to treat metastatic breast cancer that has spread to other parts of the body.

Common side effects of tamoxifen include hot flashes, vaginal discharge, and changes in mood or vision. Less commonly, tamoxifen can increase the risk of blood clots, stroke, and endometrial cancer (cancer of the lining of the uterus). However, for many women with breast cancer, the benefits of taking tamoxifen outweigh the risks.

It's important to note that while tamoxifen can be an effective treatment option for some types of breast cancer, it is not appropriate for all patients. A healthcare professional will consider a variety of factors when determining whether tamoxifen is the right choice for an individual patient.

Progestins are a class of steroid hormones that are similar to progesterone, a natural hormone produced by the ovaries during the menstrual cycle and pregnancy. They are often used in hormonal contraceptives, such as birth control pills, shots, and implants, to prevent ovulation and thicken the cervical mucus, making it more difficult for sperm to reach the egg. Progestins are also used in menopausal hormone therapy to alleviate symptoms of menopause, such as hot flashes and vaginal dryness. Additionally, progestins may be used to treat endometriosis, uterine fibroids, and breast cancer. Different types of progestins have varying properties and may be more suitable for certain indications or have different side effect profiles.

Medical mass screening, also known as population screening, is a public health service that aims to identify and detect asymptomatic individuals in a given population who have or are at risk of a specific disease. The goal is to provide early treatment, reduce morbidity and mortality, and prevent the spread of diseases within the community.

A mass screening program typically involves offering a simple, quick, and non-invasive test to a large number of people in a defined population, regardless of their risk factors or symptoms. Those who test positive are then referred for further diagnostic tests and appropriate medical interventions. Examples of mass screening programs include mammography for breast cancer detection, PSA (prostate-specific antigen) testing for prostate cancer, and fecal occult blood testing for colorectal cancer.

It is important to note that mass screening programs should be evidence-based, cost-effective, and ethically sound, with clear benefits outweighing potential harms. They should also consider factors such as the prevalence of the disease in the population, the accuracy and reliability of the screening test, and the availability and effectiveness of treatment options.

A confidence interval (CI) is a range of values that is likely to contain the true value of a population parameter with a certain level of confidence. It is commonly used in statistical analysis to express the uncertainty associated with estimates derived from sample data.

For example, if we calculate a 95% confidence interval for the mean height of a population based on a sample of individuals, we can say that we are 95% confident that the true population mean height falls within the calculated range. The width of the confidence interval gives us an idea of how precise our estimate is - narrower intervals indicate more precise estimates, while wider intervals suggest greater uncertainty.

Confidence intervals are typically calculated using statistical formulas that take into account the sample size, standard deviation, and level of confidence desired. They can be used to compare different groups or to evaluate the effectiveness of interventions in medical research.

An outpatient clinic in a hospital setting is a department or facility where patients receive medical care without being admitted to the hospital. These clinics are typically designed to provide specialized services for specific medical conditions or populations. They may be staffed by physicians, nurses, and other healthcare professionals who work on a part-time or full-time basis.

Outpatient clinics offer a range of services, including diagnostic tests, consultations, treatments, and follow-up care. Patients can visit the clinic for routine checkups, management of chronic conditions, rehabilitation, and other medical needs. The specific services offered at an outpatient clinic will depend on the hospital and the clinic's specialty.

Outpatient clinics are often more convenient and cost-effective than inpatient care because they allow patients to receive medical treatment while continuing to live at home. They also help reduce the burden on hospitals by freeing up beds for patients who require more intensive or emergency care. Overall, outpatient clinics play an essential role in providing accessible and high-quality healthcare services to patients in their communities.

Follow-up studies are a type of longitudinal research that involve repeated observations or measurements of the same variables over a period of time, in order to understand their long-term effects or outcomes. In medical context, follow-up studies are often used to evaluate the safety and efficacy of medical treatments, interventions, or procedures.

In a typical follow-up study, a group of individuals (called a cohort) who have received a particular treatment or intervention are identified and then followed over time through periodic assessments or data collection. The data collected may include information on clinical outcomes, adverse events, changes in symptoms or functional status, and other relevant measures.

The results of follow-up studies can provide important insights into the long-term benefits and risks of medical interventions, as well as help to identify factors that may influence treatment effectiveness or patient outcomes. However, it is important to note that follow-up studies can be subject to various biases and limitations, such as loss to follow-up, recall bias, and changes in clinical practice over time, which must be carefully considered when interpreting the results.

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Jay R. Harris; Marc E. Lippman; C. Kent Osborne; Monica Morrow (28 March 2012). Diseases of the Breast. Lippincott Williams & ... At menopause, breast development ceases and the breasts atrophy. Breast development results in prominent and developed ... COX-2 expression has been positively associated with breast volume and inflammation in breast tissue, as well as with breast ... Some factors of breast morphology, including their density, are clearly implicated in breast cancer. While breast size is ...
Harris, Jay R.; Lippman, Marc E.; Osborne, C. Kent; Morrow, Monica (2012). Diseases of the Breast. Lippincott Williams & ... In a breast-rating system that was invented at the time, the highest rating was given to breasts that were "small, white, round ... Fetishization of breasts results in significant anxiety in women about having the correct breasts and resulting cleavage. All ... Underwire bras can rub and press against the breast, causing skin irritation and breast pain, and the wire of a worn bra can ...
U.S.A. Library of Congress - Healthy Breasts: A Primer John Blair Deaver (1917). The Breast: Its Anomalies, Its Diseases, and ... Hypertrophy of the breast can affect the breasts equally, but usually affects one breast more than the other, thereby causing ... Breast hypertrophy is a rare medical condition of the breast connective tissues in which the breasts become excessively large. ... Breast hypertrophy is a benign progressive enlargement, which can occur in both breasts (bilateral) or only in one breast ( ...
Causes: It may happen if there is a family medical history of breast cancer, colon cancer, rectal cancer or uterine cancer, or ... Ovarian diseases refer to diseases or disorders of the ovary. These can be classified as endocrine disorders or as a disorders ... Various types of ovarian diseases exist. Some of the ovarian diseases or disorders include: endometriosis, ovarian cysts, ... Breast tenderness. Nausea and vomiting. Fever. Rapid breathing. Faintness or dizziness. Sharp pelvic pain. Treatment: Taking of ...
2003 Feb;16(1):45-9. (Breast diseases). ... Breast US in children and adolescents. García CJ, Espinoza A, ... Disorders of the breast in children and adolescents, Part 2: breast masses. De Silva NK, Brandt ML. J Pediatr Adolesc Gynecol. ... complains to a healthcare professional of breast pain (mastalgia), inflammation or a palpable nodule in the breast. The ... Overview of breast masses in children and adolescents. Banikarim C, De Silva NK. In: UpToDate [Textbook of Medicine]. Basow D ( ...
"Lymphocytes bearing the T cell receptor gamma delta in human breast milk". Archives of Disease in Childhood. 65 (11): 1274-5. ... Breast milk can also be pumped from the mother using a breast pump and fed by baby bottle, cup and/or spoon, supplementation ... Breast milk (sometimes spelled as breastmilk) or mother's milk is milk produced by mammary glands located in the breast of a ... Breast milk supplied by a woman other than the baby's mother that is not pasteurized and informal breast milk sharing is ...
Breast Disease. 31 (1): 7-18. doi:10.3233/BD-2009-0290. PMC 3228251. PMID 20519801. Cancer Genome Atlas Research, Network. (4 ... Historically cancer was identified, understood, and treated as a monolithic disease. It was seen as a "foreign" component that ... in order to study the disease as a complex adaptive system with emerging properties at multiple biological scales. Cancer ... "Dynamic modelling of oestrogen signalling and cell fate in breast cancer cells". Nat. Rev. Cancer. 11 (7): 523-532. doi:10.1038 ...
Brinker, Nancy; Braun, Susan (1998-12-01). "The Susan G. Komen Breast Cancer Foundation1". Breast Disease. 10 (5-6): 23-28. doi ... Lisa A. Carey is a Distinguished Professor in Breast Cancer Research at UNC School of Medicine, Division Chief of Hematology ... and was named co-chair of the Alliance National Cooperative Group Breast Committee in 2016. In 1998, Carey was hired as a ... was named co-chair of the Alliance National Cooperative Group Breast Committee in 2016. In 2018, Carey was selected to serve on ...
Breast Disease. 11: 113-24. doi:10.3233/bd-1999-11110. PMID 15687597. Joyce JA, Fearon DT (April 2015). "T cell exclusion, ... "A Study to Confirm Safety and Efficacy of BAN2401 in Participants With Early Alzheimer's Disease". Case Medical Research. 2019- ... Monoclonal antibody therapy may prove to be beneficial for cancer, autoimmune diseases, and neurological disorders that result ... Tissue-specific gene delivery using immunoliposomes has been achieved in brain and breast cancer tissue. Checkpoint therapy ...
... from embryogenesis to breast cancer progression". Breast Disease. 29: 91-103. doi:10.3233/bd-2008-29110. PMC 3175751. PMID ... from embryogenesis to breast cancer progression". Breast Disease. 29: 91-103. doi:10.3233/BD-2008-29110. PMC 3175751. PMID ...
The disease is characterised by the formation of painful abscesses in the mouth, lungs, breast, or gastrointestinal tract. ... Breast Disease. 35 (1): 45-47. doi:10.3233/BD-140381. PMID 25095985. Kliegman, Robert M.; St. Geme, Joseph W., III (2019). ... but the disease remained classified as a fungus in the 1955 edition of the Control of Communicable Diseases in Man. Violinist ... Disease incidence is greater in males between the ages of 20 and 60 years than in females. Before antibiotic treatments became ...
Implications for the Biology and Treatment of Breast Cancer Metastasis". Breast Disease. 26 (1): 87-98. doi:10.3233/bd-2007- ... CSCs have so far been found in a variety of tumors, including those of the brain, breast, ovary, head and neck, etc.. CSCs have ... Sauter, Edward R. (2017-10-01). "Reliable Biomarkers to Identify New and Recurrent Cancer". European Journal of Breast Health. ... Disease. 4 (7): e725. doi:10.1038/cddis.2013.250. ISSN 2041-4889. PMC 3730423. PMID 23846227. Zimmerman, Mary A.; Huang, Qian; ...
Gentilini OD, Boccardo C (2015). "Male Breast Diseases". The Outpatient Breast Clinic. pp. 431-446. doi:10.1007/978-3-319-15907 ... and Tanner stage III/11 of the right and left breast in 1. The 7th patient was noted to have Tanner Ill breasts at her 2nd ... This included breast development to Tanner stages 2 to 5 in 85% of the patients at the first follow-up visit at 6.3 months of ... Some gynecomastia and breast tenderness developed in one patient treated with 50 mg/day, but significantly improved upon the ...
Salemis NS (2012). "Breast hematoma complicating anticoagulant therapy: management and literature review". Breast Disease ( ... A breast hematoma may appear due to direct trauma to the breast, for example from a sports injury or a road accident, for ... Breast hematoma is a collection of blood within the breast. It arises from internal bleeding (hemorrhage) and may arise due to ... Rarely, a breast hematoma can also occur spontaneously due to a rupture of blood vessels in the breast, especially in persons ...
Pittet, B; Montandon, D; Pittet, D (2005). "Infection in breast implants". The Lancet Infectious Diseases. 5 (2): 94-106. doi: ... 2003). "Noma: An "infectious" disease of unknown aetiology". The Lancet Infectious Diseases. 3 (7): 419-31. doi:10.1016/S1473- ... Melbourne Infectious Diseases Group (Australia) 2009: European Society of Clinical Microbiology and Infectious Diseases (ESCMID ... Noma, disease of poverty Pittet, B; Jaquinet, A; Montandon, D (2001). "Clinical experience in the treatment of noma sequelae". ...
Jay R. Harris; Marc E. Lippman; C. Kent Osborne; Monica Morrow (28 March 2012). Diseases of the Breast. Lippincott Williams & ... Breast Cancer Res. 8 (1): 201. doi:10.1186/bcr1368. PMC 1413974. PMID 16524451. Hynes, N. E.; Watson, C. J. (2010). "Mammary ... Breast Cancer Res. 6 (1): 1-11. doi:10.1186/bcr634. PMC 314442. PMID 14680479. Sternlicht MD (2006). "Key stages in mammary ... Breast Cancer Res. 6 (1): 1-11. doi:10.1186/bcr634. PMC 314442. PMID 14680479. Sternlicht MD (2006). "Key stages in mammary ...
"Annals of Breast Diseases". Breastdiseases.in. 2020. "Dr. Somashekhar, Cancer/Oncology , Mya Care". myacare.com. Somashekhar, S ... He is also the editor of Annals of Breast Diseases. Somashekhar SP started his career as a consultant and assistant professor ... He is the president of the Association of Breast Surgeons of India, editor in chief of the IJGO Springer Indian Journal of ... is the editor and author of Various Text Book and operative Atlas's on Oncosurgery and Breast surgery, Gynecological oncology ...
Harris JR, Lippman ME, Osborne CK, Morrow M (28 March 2012). Diseases of the Breast. Lippincott Williams & Wilkins. pp. 88-. ... Zhang X, Yee D (2001). "Tyrosine kinase signalling in breast cancer: insulin-like growth factors and their receptors in breast ... In breast cancer, where EGFR inhibitors such as erlotinib are being used to inhibit the EGFR signaling pathway, IGF-1R confers ... The IGF-1R is implicated in several cancers, including breast, prostate, and lung cancers. In some instances its anti-apoptotic ...
Howell SJ, Howell A (2010). "Endocrine Therapy". Management of Breast Diseases. pp. 329-352. doi:10.1007/978-3-540-69743-5_18. ... Onapristone has been found to be effective in the treatment of breast cancer. As of 2016, onapristone has re-emerged and is ... The medication was under development for clinical use, for instance in the treatment of breast cancer and as an endometrial ... It was also under development for the treatment of endometrial cancer, breast cancer, ovarian cancer, and uterine cancer, but ...
... sex-related diseases, which are diseases that are more common to one sex (for example, breast cancer and systemic lupus ... Certain neurodegenerative diseases (Parkinson's disease (2:1 ratio) and Lewy body dementia (4:1 ratio)) are more prevalent in ... Sex differences have been found across a broad range of disease areas, including many diseases which are sex-specific. The sex ... Huntington's disease affects females and males differently. Females have faster disease progression, and display symptoms with ...
Infantile diseases and illnesses. Also symbolic for fathers who lost a child to abortion. "Baby Loss Awareness Campaign". ... Male breast cancer awareness. Pre-natal loss including miscarriage, ectopic pregnancy, stillbirth and prematurity. ...
Ismail Jatoi; Achim Rody (16 November 2016). Management of Breast Diseases. Springer. pp. 77-. ISBN 978-3-319-46356-8. Mansel R ... Alice C. Levine (3 October 2011). Hormones and Cancer: Breast and Prostate, An Issue of Endocrinology and Metabolism Clinics of ... Breast Cancer Res. Treat. 106 (3): 389-397. doi:10.1007/s10549-007-9507-x. PMID 17351746. S2CID 22382077. Prossnitz ER, ... is under development under the tentative brand name TamoGel as a topical gel for the treatment of hyperplasia of the breast. It ...
These can affect any organ such as the brain, intestine, ovaries, breast, lungs, esophagus, pancreas, bones, and many others. ... African Journal of Infectious Diseases. 5 (1): 7-10. doi:10.4314/ajid.v5i1.66508. PMC 3497843. PMID 23878702. Baharoon S (July ... Sen M, Gorpelioglu C, Bozer M (2009). "Isolated primary breast tuberculosis: report of three cases and review of the literature ... importance of recognition and differentiation from that of a breast malignancy: report of three cases and review of the ...
ISBN 978-1-000-14452-9. v t e (Articles with short description, Short description matches Wikidata, Breast diseases, All stub ... Breast tension is a constellation of symptoms involving the breasts including: Breast pain (also called mastalgia) Breast ... Sommers, Marilyn Sawyer (2022-09-30). Davis's Diseases & Disorders: A Nursing Therapeutics Manual. F.A. Davis. p. 692. ISBN 978 ...
Seminars in Breast Disease. Exploring the Economics of Breast Care: New Perspectives, New Directions. 11 (3): 160-163. doi: ... Through an existing relationship with the Walter Reed Army Medical Center, in the Clinical Breast Care Program, WRI currently ... Studies are ongoing regarding tumor heterogeneity, disease and patient stratification, environment and lifestyle risk factors, ... cardiovascular disease and processes of aging, is located on Somerset Avenue in Windber, Pennsylvania. It opened in 2001. The ...
Journal of Breast Disease. 4 (2): 116-121. doi:10.14449/jbd.2016.4.2.116. ISSN 2288-5560. (Articles with short description, ... High levels of pyrimidine-nucleoside phosphorylase and thymidine phosphorylase are expressed in esophageal, breast, cervical, ... "Oncologic Effect of Oral Fluorouracil in Hormone Receptor-Negative T1a Node-Negative Breast Cancer Patients". ...
Breast changes such as lumps, bumps, and discharge are common. Some causes can be aging, hormones, and medicines. Learn whats ... Breast self-exam (Medical Encyclopedia) Also in Spanish * Breast skin and nipple changes (Medical Encyclopedia) Also in Spanish ... ClinicalTrials.gov: Breast Diseases (National Institutes of Health) * ClinicalTrials.gov: Gynecomastia (National Institutes of ... Breast Biopsy (National Library of Medicine) Also in Spanish * Breast Cyst Aspiration (American Academy of Family Physicians) ...
A majority of breast diseases are noncancerous. A breast tumor is an abnormal mass of tissue in the breast as a result of ... Breast diseases make up a number of conditions. The most common symptoms are a breast mass, breast pain, and nipple discharge. ... abscess actinomycosis of the breast duct ectasia syndrome breast engorgement Mondors disease Pagets disease of the breast ... Signs of breast cancer may include a lump in the breast, a change in breast shape, dimpling of the skin, fluid coming from the ...
American Society of Breast DiseaseNews, press releases, and expert sources for journalists in science, medicine & business ... American Society of Breast Disease. Name and Address. American Society of Breast Disease. News office: United States. Phones. ... Biotech Cancer Coronavirus/COVID-19 Clinical Trials Diabetes Genetics Infectious Disease Neuro Obesity Women?s Health View all ...
Posts about Fibrocystic Breast Disease written by What Doctors Dont Tell You and Christine Horner MD FACS ... Fibrocystic breast disease, also known as cystic mastitis or fibroadenoma, is not only common, but also worrying. Any lump or ... Eat one serving of whole soy foods each day to lower your risk of breast cancer by 30-50%. Soy is a superstar in your arsenal ... Breast Health Tip #22: Keep Your Body-fat Percentage Low. Christine Horner MD FACS ...
... whereas when complex breast disease is diagnosed, the treatment is aggressive, with surgical options. ... table 1). The concept is based on the progression from normal to aberrant (anatomical or physiological deviation) to disease ... gland structures and their respective physiological roles helps to detect anatomic variations and diagnose breast disease at ... Mammary abnormalities may be classed as either minor aberrations in normal developmental processes, as part of the breasts ...
In many ways, the two diseases can intertwine.. "Heart disease and breast cancer share common risk factors such as age, ... Health and medicine/Diseases and disorders/Cancer/Breast cancer * /Life sciences/Organismal biology/Anatomy/Circulatory system/ ... Cardiovascular disease is the leading cause of death for women in the U.S. and globally. However, more women think breast ... Studies have shown it can raise the risk of breast cancer and heart disease among certain groups of women, and is therefore a ...
... triple-negative breast cancer (TNBC) underscores pivotal needs to uncover novel biomarkers and viable therapies. MicroRNAs have ... In 2019, breast cancer alone accounts for 15% of all cancer deaths, inferior to lung and bronchus1, and the disease burden ... Breast cancer is a heterogeneous disease with distinct histopathological feature and clinical behavior among subtypes. TNBC has ... Breast cancer cell lines. The human normal breast epithelial cell line (HBL-100), 5 TNBC cell lines (MDA-MB-231, BCap37, Hs 578 ...
Norman, F. F., & López-Vélez, R. (2013). Chagas Disease and Breast-feeding. Emerging Infectious Diseases, 19(10), 1561-1566. ... Norman FF, López-Vélez R. Chagas Disease and Breast-feeding. Emerging Infectious Diseases. 2013;19(10):1561-1566. doi:10.3201/ ... Chagas Disease and Breast-feeding On This Page Search Strategy and Selection Criteria Animal Studies Studies in Humans ... cruzi through breast-feeding to provide breast-feeding mothers with Chagas disease with medical guidance. Although data from ...
The Link Between Breast Cancer and Heart Disease. Learn more about the connection between breast cancer and heart disease, ...
... early breast cancer. At this stage, 90% of the cancers are curable. Clearly, this fundamental tenet accentuates the importance ... Breast disease: a primer on diagnosis and management Int J Fertil Womens Med. 1997 Sep-Oct;42(5):278-87. ... Although breast carcinoma is a major focus due to incidence, morbidity and mortality, the varieties of benign conditions cause ... Currently, mammography is the only method of detecting nonpalpable, early breast cancer. At this stage, 90% of the cancers are ...
The disease probably represents an immune reaction to the abnormal accumulation of altered extracellular matrix in the breast, ... For many years, global health has been associated with diseases like HIV/AIDS and malaria. And rightly so. These diseases ... In many countries, cancer ranks the second most common cause of death following cardiovascular diseases. ... Cancer is a major burden of disease worldwide. Each year, tens of millions of people are diagnosed with cancer around the world ...
Previous studies have found black women are more likely to die from breast cancer compared to their white peers. Medics said ... dont suffer as much from breast cancer, experts have said. ... Asian and ethnic minority people to participate in breast ... More must be done to fight the broad misperception black women dont suffer as much from breast cancer, experts have said. ... Medics said they wanted more black, Asian and ethnic minority people to participate in breast cancer trials, as they warned ...
Mercy breast care specialists provide comprehensive care for benign breast disease. Learn how we will help you overcome ... What is Benign Breast Disease?. Its natural to assume that breast lumps are a sign of cancer because lumps are a common breast ... Benign Breast Disease Diagnosis & Treatment. Mercys breast care specialists understand that breast changes can be worrisome. ... "benign breast disease" can cause lumps to form in one or both breasts. ...
This topic contains 11 study abstracts on Breast Cancer: Recovery indicating that the following substances may be helpful: ... Diseases : Breast Cancer, Breast Cancer: Bone Metastasis, Breast Cancer: Invasive Lobular Carcinoma (ILC), Breast Cancer: ... Metastatic, Breast Cancer: Prevention, Breast Cancer: Recovery , Breast Cancer: Triple Negative Problem Substances : Fructose, ... Diseases : Breast Cancer: Recovery , Musculoskeletal Abnormalities. Problem Substances : Aromatase Inhibitor Drugs, Exemestane ...
Breast cancer survivors fears over cancer is not a black disease myth. ... "Theres a myth that cancer is not a black disease.". So after beating her illness, she decided to break the silence with a ... Then, just six months after her mum fought cancer a second time, Leanne found a lump in her own breast. She had chemo, a ... Shed barely heard of any other young black women having the disease, and the topic was almost taboo within her community, ...
... hurdles in joining competitors in the colorectal cancer space but believes it can claim first mover status in early breast ... NeoGenomics Growing Evidence Base for Residual Disease Assay in Breast Cancer Dec 12, 2022 , Molika Ashford ... NeoGenomics platform, called Radar, falls under the umbrella of minimal residual disease or molecular residual disease (MRD) ... In the breast cancer space, where MRD assays need to be sensitive enough to pick up the presence of mutant alleles at low ...
... disease, lump, risks, symptoms icon in flat style from the Hospitals & healthcare category. Available in PNG and SVG formats. ...
... disease, fly, ribbon icon in outline style from the Hospitals & healthcare category. Available in PNG and SVG formats. ...
Diseases : Breast Cancer, Breast Cancer: Triple Negative , Breast Cancer Stem Cells. Pharmacological Actions : Apoptotic, ... Diseases : Breast Cancer, Breast Cancer: Drug Resistant, Breast Cancer Stem Cells, Cancer Stem Cells ... Diseases : Breast Cancer, Breast Cancer Stem Cells. Pharmacological Actions : Chemotherapeutic, Interleukin-6 Downregulation, ... Diseases : Breast Cancer, Breast Cancer Stem Cells. Pharmacological Actions : Antineoplastic Agents, Antiproliferative , ...
We take a look at the inspirational faces who have survived breast cancer ... I changed my life after my mums breast cancer diagnosis - heres how. After her mum was diagnosed with breast cancer in 2011, ... these brave women have shared details of their breast cancer journeys and its something we can all learn from this Breast ... October marks Breast Cancer Awareness Month, a time when men and women around the world unite in a show of support against the ...
Benign breast disease. Description: Fibrocystic breast disease is a generalized term for non- malignant lumps in breasts, ... Although it is called a disease, it is not really a disease. Therefore the term benign breast disease or fibrocystic condition ... Women with fibrocystic breast disease continue to have breast lumps that appear and dissolve; some remain permanently. The ... Fibrocystic breast disease is the most frequent cause of lumps in the breast. ...
We analyze end-of-treatment ctDNA status in 80 TNBC patients with residual disease who are enrolled in a prospective multisite ... patients with residual disease (RD) after neoadjuvant systemic therapy (NAST) are at high risk for recurrence. Biomarkers to ... End-of-treatment ctDNA is detectable in one-third of TNBC patients with residual disease after NAST. ctDNA status and RCB are ... ctDNA and residual cancer burden are prognostic in triple-negative breast cancer patients with residual disease. npj Breast ...
One gram of fish oil a day can reduce your risk of developing chronic diseases like breast cancer. ... One gram of fish oil a day can reduce your risk of developing chronic diseases like breast cancer. U.S. Fish and Wildlife ... Benefits Of Fish Oil: How Omega-3 Can Prevent Breast Cancer And Other Chronic Diseases. Jul 01, 2013 01:12 PM. By ... Breast Cancer. A high intake of fish oil can reduce a womans breast cancer risk by 14 percent, says a study published in ...
... which is typically used to treat symptoms of Alzheimers disease and dementia, did not improve cognitive impairment, or ... Findings from a study conducted in women with a history of breast cancer demonstrated that treatment with donepezil, ... Alzheimers Disease Medication May Not Improve Cognitive Impairment in Breast Cancer Survivors. Jul 5, 2023. Darlene Dobkowski ... An Alzheimers disease/dementia medication did not significantly improve cancer-related cognitive impairment in breast cancer ...
Tag: Fibrocystic Breast Disease. W What Foods Should I Avoid With Fibrocystic Breast Disease?. Health, Personal Care & Fitness ... More than half of women experience fibrocystic breast disease at some part of their lives. Depending on the severity, a woman ... with fibrocystic breast disease may or may not notice or experience pain. While FCBD doesnt pose any severe health risks, it ... can still cause discomfort, itching, and swelling in the breast. Thats why its essential […] ...
Stage IV Metastatic Breast Cancer With No Evidence of Disease. January 7, 2021. Personal Stories Share. ... My scans continue to show there is no evidence of disease. No tumor growth anywhere. I am still an metastatic breast cancer ( ... Then in December 2018 I was told I have "Stage IV metastatic breast cancer with scans showing no evidence of disease." ... Rediscovering Who I Am: A Breast Cancer Survivor December 1, 2023. Stephanies Story: Nothing Can Stop Me After a Breast Cancer ...
... March 13, 2013 by Larry Husten 1 Comment ... Filed Under: Prevention, Epidemiology & Outcomes, Uncategorized Tagged With: Breast, Breast cancer, cancer, health, Oncology, ... peripheral vascular disease, cardiomyopathy, valvular dysfunction, and arrhythmias, according to Moslehi, and other breast ... A new study published in the New England Journal of Medicine offers the best look yet at the increased risk for heart disease ...
N60.19 - Diffuse cystic mastopathy of unspecified breast. SNOMEDCT:. 27431007 - Fibrocystic disease of breast ... Fibrocystic disease of the breast. Subscriber Sign In Feedback Select Language Share Search for a symptom, medication, or ... Fibrocystic breast changes are common, benign cystic changes in the fibrous breast tissue associated with the female hormonal ... Other symptoms are breast tenderness, pain (mastalgia), and discomfort. Most often occurs cyclically in women of childbearing ...
This breast cancer awareness month, a local doctor says its a disease that is becoming more prevalent. ... Millions of people have been diagnosed with breast cancer around the world. ... This Breast Cancer Awareness Month, a local doctor says its a disease that is becoming more prevalent. Dr. Ferra Lin-Duffy, a ... This Breast Cancer Awareness Month, Las Vegas doctor says early detection of the disease is key. ...

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