• Different patterns of malignant change occur in pleomorphic adenoma , of which true malignant mixed tumor (carcinosarcoma) is one form. (medscape.com)
  • By definition, carcinosarcoma is a biphasic malignant tumor with a carcinomatous component and a sarcomatous component. (medscape.com)
  • A carcinosarcoma neoplasm is a biphasic tumor in which the carcinomatous component is usually a poorly differentiated adenocarcinoma, an undifferentiated carcinoma, or a squamous cell. (medscape.com)
  • True malignant mixed tumor (carcinosarcoma) of tonsillar minor salivary gland origin: diagnostic imaging and endovascular therapeutic embolization. (ajnr.org)
  • A malignant mixed Mullerian tumour of the uterus, also known as carcinosarcoma, is a rare type of cancer that contains both carcinoma (cancer of the epithelium) and sarcoma (cancer of the connective tissue) components. (withoutaribbon.org)
  • Uterine carcinosarcoma, also known as malignant mixed Mullerian tumor (MMMT), is a rare and aggressive form of corpus uteri tumor. (cytojournal.com)
  • These efforts are centered on improving surgery for patients with epilepsy and brain tumors, particularly those whose pathology is intimately involved with critical brain regions. (dana-farber.org)
  • Although pathologists in their daily services of surgical pathology had recognized such singular atypical cells in pleomorphic adenomas, these atypical cells were not always regarded as evidence or the source for malignant transformation [ 4 - 6 ]. (biomedcentral.com)
  • World Health Organization Classification of Tumors: Pathology and Genetics of Tumors of Soft Tissue and Bone, 2002). (curehunter.com)
  • Tumors of the salivary glands, though uncommon, are not that rare and constitute an important field in oralmaxillofacial pathology. (bvsalud.org)
  • Ovarian germ cell tumors are more common in adolescent girls and young women. (cigna.com)
  • Most ovarian germ cell tumors are benign mature teratomas (dermoid cysts). (cigna.com)
  • Gershenson DM: Update on malignant ovarian germ cell tumors. (kaiserpermanente.org)
  • Adjuvant therapy of ovarian germ cell tumors with cisplatin, etoposide, and bleomycin: a trial of the Gynecologic Oncology Group. (kaiserpermanente.org)
  • Malignant ovarian germ cell tumors: identification of novel prognostic markers and long-term outcome after multimodality treatment. (kaiserpermanente.org)
  • [ 1 ] The term true malignant mixed tumor in the salivary glands was first used by King in 1967 in a study that helped to renew interest in this tumor group. (medscape.com)
  • The cells are malignant epithelial, myoepithelial cells admixed sometimes with malignant mesenchymal cells. (eurocytology.eu)
  • There is a rare variant of in situ malignant mixed tumor: in these cases the same kinds of malignant myoepithelial or epithelial cells are present, they invade the capsule and vessels inside the lesion, but are not invasive towards the surrounding salivary gland tissue. (eurocytology.eu)
  • [ 7 ] Tumors with pure sarcomatoid morphology due to overgrowth of the RCC components are classified as SRCC if evidence of epithelial differentiation can be demonstrated through immunohistochemical or ultrastructural analysis. (medscape.com)
  • While most tumors metastatic to the serous membranes are of epithelial origin, cytologists should be aware that non-epithelial neoplasms can also cause malignant effusions including sarcomas, melanomas, germ cell tumors, and, more rarely, brain tumors. (cytojournal.com)
  • Diagnosing non-epithelial malignancies in effusion specimens based entirely upon their cytomorphologic features is difficult because these neoplasms often exhibit considerable morphological overlap and their cytomorphology can differ from the original tumor. (cytojournal.com)
  • As malignant cells have a tendency to round up in body fluids these non-epithelial neoplasms can therefore mimic reactive mesothelial cells and metastatic adenocarcinoma. (cytojournal.com)
  • Most tumors metastatic to the serous membranes are of epithelial origin. (cytojournal.com)
  • Common non-epithelial neoplasms that may cause malignant effusions include malignant melanoma, sarcomas, and other neoplasms including germ cell tumors [ Figure 1 ]. (cytojournal.com)
  • Other rare non-epithelial malignancies that may be encountered in effusion cytology include neuroblastoma, Wilms tumor, and metastatic brain tumors. (cytojournal.com)
  • 4 Malignant effusions caused by non-epithelial neoplasms are more frequently encountered in children than in adults. (cytojournal.com)
  • Using immunohistochemistry in a well-characterized set of adenocarcinoma tissues, we showed down-regulation of epithelial markers (E-cadherin and cytokeratin 18) and up-regulation of mesenchymal markers (vimentin and α-smooth muscle actin) with concomitant transforming growth factor-β1 (TGF-β1) expression at the invasive margin compared with the central tumor. (aacrjournals.org)
  • Müllerian adenosarcoma (MA) is a rare mixed and low malignant tumor of female genital system, and is a biphasic differential tumor that is composed of admixed benign epithelial and sarcomatoid mesenchymal components. (scirp.org)
  • The tumor is composed of two cellular components: Epithelial and mesenchymal. (cytojournal.com)
  • Among the cancers, a study with 150 dogs of both genders and of different races, found that 74 (49.3%) were mesenchymal, 26 (17.3%) epithelial, seven (4.7%) of neuroectodermal origin, seven (4.7%) of sexual cord and interstitium, 16 (10.7%) were transmissible venereal tumors, and 20 (13.3%) were cancers of mammary glands (Magalhães et al . (vin.com)
  • The change of name to "pleomorphic" adenoma was first suggested as recently as 1948, as this term describes the embryological basis for these tumors, which originate in the epithelial and connective tissue 3 . (bvsalud.org)
  • Even though it has an origin which is exclusive to epithelial tissue, the variety of components accords it a mesenchymal appearance as a result of the production of secretions from the tumor cells themselves, which may be ductal or myoepithelial 7 . (bvsalud.org)
  • For information on intracranial (inside the brain) germ cell tumors, see Childhood Central Nervous System Germ Cell Tumors Treatment. (cigna.com)
  • This study on 279 tumours of the salivary glands was conducted to analyse whether the assessment of DNA ploidy by flow cytometry may assist histopathology in discriminating benign from malignant types of tumours. (researchgate.net)
  • About 85% of salivary gland tumors occur in the parotid glands, followed by the submandibular and minor salivary glands, and about 1% occur in the sublingual glands. (merckmanuals.com)
  • Benign cylindromas can slowly undergo malignant transformation into adenoid cystic carcinomas, the most common malignant tumor of minor salivary glands (and of the trachea). (merckmanuals.com)
  • Pleomorphic adenoma (PA) is the most commonly found neoplasm amongst tumors of the major and minor salivary glands, originally called a mixed benign tumor in 1866 3-5 . (bvsalud.org)
  • It represents between 53% and 77% of parotid tumors, 44% to 68% of tumors of the submandibular gland and 33% to 43% of tumors of the minor salivary glands 2 . (bvsalud.org)
  • The tumor is arising in a previously existed pleomorphic adenoma or theoretically it may start as a de novo malignant mixed tumor. (eurocytology.eu)
  • For example, benign pleomorphic salivary gland tumors may have some tumors cells that form pseudocartilage. (wikipedia.org)
  • As compared to the previous edition, changes include a better definition of pre-invasive lesion, a reclassification of adenocarcinoma, the description of two new tumour types as variants of large cell carcinoma, large cell neuroendocrine carcinoma (LCNEC) and basaloid carcinoma, and a new class called pleomorphic carcinoma. (ersjournals.com)
  • The malignant tumours consisted of 18 adenoid cystic adenomas, 10 mucoepidermoid carcinomas, 5 acinic cell carcinomas, 5 carcinoma in pleomorphic adenoma as well as of 12 other malignancies belonging to 7 different tumour entities. (researchgate.net)
  • It is still poorly understood how and which benign pleomorphic adenoma cells transform into its malignant form, carcinoma ex pleomorphic adenoma. (biomedcentral.com)
  • In addition, they had ductal arrangements or plasmacytoid appearances of tumor cells and myxoid or hyaline stromata, indicating some characteristics of pleomorphic adenoma. (biomedcentral.com)
  • This study demonstrates in vitro that certain cell types from pleomorphic adenoma are able to clone and survive over a long term and develop subcutaneous tumors in nude mice. (biomedcentral.com)
  • Pleomorphic adenomas (also known as mixed-type tumors) are the most common benign salivary gland tumors. (merckmanuals.com)
  • Pleomorphic adenomas (mixed-type tumors) can undergo malignant transformation, but this usually occurs only after the benign tumor has been present for 15 to 20 years. (merckmanuals.com)
  • Once malignant degeneration of a pleomorphic adenoma occurs, it is known as carcinoma ex pleomorphic adenoma. (merckmanuals.com)
  • Carcinomatous elements in the tumor metastasize, making carcinoma ex pleomorphic adenoma a highly aggressive tumor with very low cure rates regardless of treatment. (merckmanuals.com)
  • This may be due to late diagnosis of these tumors in our patients as most cases diagnosed at advanced stage and the sections were taken from deep tumor tissue to increase the number of tumor cells in our samples. (researchgate.net)
  • 2001). Considering only the round-cells tumors, the effectiveness increases to 95%, helping the definitive diagnosis of these tumors because they have characteristics better defined in cytological examinations then in histopathology (Guedes et al . (vin.com)
  • 2001). In another study, 64 dogs with cutaneous round-cell tumors were put up for cytological examination, where were found 25 mast-cell tumors, 15 histiocytomas, nine lymphomas and 15 transmissible venereal tumors (Duncan & Prasse 1979). (vin.com)
  • In the images below, the sarcomatous (spindle cell sarcoma) component of the tumor is dominant, with the smaller portion being poorly differentiated adenocarcinoma. (medscape.com)
  • A history of prior squamous cell carcinoma , malignant melanoma , or malignant fibrous histiocytoma suggests intraglandular metastasis or metastasis to parotid lymph nodes. (medscape.com)
  • Ciliary body melanoma is a rare tumor. (medscape.com)
  • Ciliary body melanoma is a subtype of uveal melanoma, the most common primary malignant tumor of the eye. (medscape.com)
  • Uveal melanomas are the most common primary intraocular malignancies and the second most common type of primary malignant melanoma in the body. (medscape.com)
  • More aggressive tumours have low T 1 - and T 2 -characteristics while high signal is observed on both T 1 - and T 2 -weighted images if there has been recent haemorrhage within the tumour. (ispub.com)
  • Twelve of 50 malignant salivary gland tumours were aneuploid. (researchgate.net)
  • The most obvious value of DNA flow cytometry in salivary gland tumours is thus its contribution to assist histopathology in identifying potentially malignant lesions. (researchgate.net)
  • This study in Iraq used in situ hybridization to detect the frequency and genotyping of HPV in tissue specimens from 129 patients diagnosed with malignant breast cancer, 24 with benign breast tumours and 20 healthy controls. (who.int)
  • Interphone was the largest case-control study to date investigating risks related to mobile phone use and to other potential risk factors for the tumours of interest and included 2,765 glioma, 2,425 meningioma, 1,121 acoustic neuroma, 109 malignant parotid gland tumour cases and 7,658 controls. (who.int)
  • Malignant mixed Mullerian tumour of the Uterus represents about 3-5% of all uterine cancers. (withoutaribbon.org)
  • The exact cause of the malignant mixed Mullerian tumour of the uterus is unknown, but it is likely to involve genetic mutations that lead to uncontrolled cell growth and division. (withoutaribbon.org)
  • Risk factors that may increase the likelihood of developing a malignant mixed Mullerian tumour of the uterus include obesity, use of tamoxifen (a drug used in the treatment of breast cancer), and a history of pelvic radiation therapy. (withoutaribbon.org)
  • What Support can we Give for Malignant Mixed Mullerian Tumour of the Uterus? (withoutaribbon.org)
  • Malignant Mixed Mullerian Tumour of the Uterus is rare cancer, meaning it is not as well known as other forms of cancer. (withoutaribbon.org)
  • If you suffer from rare cancer such as Malignant Mixed Mullerian Tumour of the Uterus, we can help and support you through your journey thanks to the generous donations we receive. (withoutaribbon.org)
  • BACKGROUND: Malignant mixed mesodermal tumors (MMMTs) are uncommon, highly aggressive tumors of the uterus composed of both carcinomatous and sarcomatous elements, both likely to be derived from the same original stem cell. (elsevierpure.com)
  • Müllerian adenosarcomas are rare mixed tumors with low malignant potential, and occur mainly in the uterus. (scirp.org)
  • Nonsquamous cell cancers, including minor salivary gland cancers, sarcomas, and melanomas, account for the other half (see the histologic distribution of hard palate malignant neoplasms and the histologic types and frequencies of minor salivary gland neoplasms of the palate, below). (medscape.com)
  • RR CC was named for its morphologic resemblance to pediatric malignant rhabdoid tumor (MRT) of the kidney, which is a highly aggressive tumor characterized by cells that resemble rhabdomyoblasts and by genetic alterations involving chromosome 22, particularly the hSNF5/INI1 gene on 22q11.2. (medscape.com)
  • The Cutaneous Glomus and its Tumors-Glomangiomas. (nih.gov)
  • The mast cell tumors was also the highest incident tumor in another study involving cutaneous tumors (Griffith s et al . (vin.com)
  • Mucoepidermoid cancer, small cell tumor may also develop in malignant mixed tumors. (eurocytology.eu)
  • This can be used before surgery to shrink the tumour, or after surgery to kill any remaining cancer cells. (withoutaribbon.org)
  • Perform staging of the tumor according to the American Joint Committee on Cancer staging protocol because this is of critical importance to the patient's prognosis. (medscape.com)
  • Specific treatment of palate cancer depends on the location of the tumor (hard vs soft palate), stage of the tumor, and pathologic type of the cancer. (medscape.com)
  • Extracranial germ cell tumors may be benign (noncancer) or malignant (cancer). (cigna.com)
  • Children and adolescents with ganglioglioma are treated at Dana-Farber/Boston Children's Cancer and Blood Disorders Center through the Brain Tumor Center , one of the largest and most experienced pediatric brain tumor treatment programs in the world. (childrenshospital.org)
  • The Brain Tumor Center at Dana-Farber/Boston Children's Cancer and Blood Disorders Center is a world-renowned destination for children with malignant and non-malignant brain and spinal cord tumors. (childrenshospital.org)
  • Overview of Head and Neck Tumors Head and neck cancer develops in almost 65,000 people in the United States each year. (merckmanuals.com)
  • L'étude menée en Iraq a utilisé la méthode d'hybridation in situ pour déterminer la fréquence du papillomavirus humain et pour son génotypage dans les échantillons de tissus prélevés auprès de 129 patientes ayant reçu un diagnostic de cancer du sein malin, de 24 patientes porteuses d'une tumeur du sein bénigne et de 20 femmes témoins en bonne santé. (who.int)
  • Di Gioia D, Blankenburg I, Nagel D, Heinemann V, Stieber P. Tumor markers in the early detection of tumor recurrence in breast cancer patients: CA 125, CYFRA 21-1, HER2 shed antigen, LDH and CRP in combination with CEA and CA 15-3. (scielo.br)
  • Shao Y, Sun X, He Y, Liu C, Liu H. Elevated levels of serum tumor markers CEA and CA15-3 are prognostic parameters for different molecular subtypes of breast cancer. (scielo.br)
  • 2 Ampullary cancer, neuroendocrine, mixed neuroendocrine and non-neuroendocrine neoplasms and nonepithelial tumors. (who.int)
  • Agency for Research on Cancer (IARC) coordinated a feasibility study in 1998 and 1999, which concluded that an international study of the relationship between mobile phone use and brain tumour risk would be feasible and informative. (who.int)
  • Finally, although XMRV was initially discovered in tumor tissue of a subset of patients with prostate cancer (according to results published in March 2006 in PLoS Pathogens ), other studies have had varied results in finding the virus in prostate tumors. (medscape.com)
  • Sarcomatoid renal cell carcinoma (SRCC) is currently defined in the 2004 World Health Organization (WHO) classification of renal tumors as any histologic type of renal cell carcinoma (RCC) containing foci of high-grade malignant spindle cells. (medscape.com)
  • 76 patients were confirmed germinoma, 29 mixed germ cell tumor, 4 teratoma, 9 malignant teratoma, 6 endodermal sinus tumor, 20 choriocarcinoma and 1 embryonal carcinoma. (researchsquare.com)
  • Classification of central nervous system germ cell tumors according to the World Health Organization divides them into germinoma and non-germinoma germ cell tumors(NGGCTs), with 6 different types of the latter, which includes teratoma, embryonal carcinoma, endodermal sinus tumor (yolk sac tumor), chorionic epithelioma (also called choriocarcinoma) and mixed germ cell tumors(GCTs) 7 (including above components sometimes teratoma and germinoma as well). (researchsquare.com)
  • Transplanted cells in nude mice formed subcutaneous tumors, which had histological features of squamous cell carcinoma with apparent keratinizing tendencies. (biomedcentral.com)
  • The malignant lesions comprised three cases of ductal carcinoma in situ (DCIS) and 22 cases of infiltrating ductal carcinoma, not otherwise specified, IDC (NOS). (ijpmonline.org)
  • Acinic cell carcinoma, a common parotid tumor, occurs in people in their 40s and 50s. (merckmanuals.com)
  • O carcinoma de células escamosas foi o segundo tumor mais frequente (15% de todos os tumores). (scielo.br)
  • Breast carcinoma is the common- noma not otherwise specified, 17 cases sues (according to the specification of est malignancy among women in of lobular carcinoma, 5 cases of mixed the second differential kit which gave developed and developing countries ductal and lobular carcinoma and 7 the blue colour). (who.int)
  • The tumor is easily diagnosable on cytology in dedifferentiated and invasive cases: it consists mostly of malignant squamous, in some cases keratinizing squamous cells, atypical glandular cells. (eurocytology.eu)
  • No cytology publication on this latter tumor until now. (eurocytology.eu)
  • The complications of cytology are hemorrhages, infections, injury of adjacent tissue and dissemination of malignant cells, all of which are considered rare events (Guedes et al . (vin.com)
  • Its metastatic potential depends on the phenotype of the tumor cells, and it frequently disseminates before diagnosis. (medscape.com)
  • This aggressive tumour represents only a small fraction of all uterine cancers but is responsible for a significant number of deaths due to its tendency to spread early and recur after treatment. (withoutaribbon.org)
  • A further 20 blocks from The ISH results were given percentage vanced stages with a likely prevalence samples from normal breast tissues scores based on positive signals and of more aggressive tumour forms were labelled as a control group (i.e. number of cells that gave these signals. (who.int)
  • The differential diagnosis of a malignant effusion is accordingly broad, especially for the small round blue cell tumors that includes not only mesenchymal tumors, but also non-mesenchymal tumors, such as neuroblastoma and Wilms tumor. (cytojournal.com)
  • A family of mesenchymal tumors composed of histologically and immunohistochemically distinctive perivascular epithelioid cells. (curehunter.com)
  • Gallium‐68 ( 68 Ga)‐1,4,7,10‐tetraazacyclo‐dodecane‐1,4,7,10‐tetraacetic acid DOTA‐peptides highlight neuroendocrine tumors ( NETs ) through binding the somatostatin receptors that are overexpressed on the surfaces of their cells. (radiologykey.com)
  • A review of the literature in 1979 prior to the widespread use of combination chemotherapy found only 27% of 96 patients with stage I endodermal sinus tumor alive at 2 years after diagnosis. (kaiserpermanente.org)
  • Therapy of endodermal sinus tumor of the ovary. (kaiserpermanente.org)
  • Endodermal sinus tumor (rare subtypes are hepatoid and intestinal). (kaiserpermanente.org)
  • There was no significant correlation of ploidy status or SPF with the tumor grades of mucoepidermoid carcinomas. (researchgate.net)
  • Conclusion: DNA aneuploidy may be a key indicator for tumors activity and malignancy in SGTs, while the SPF has a minor role in the evaluation of SGTs activity. (researchgate.net)
  • shows a large, asymmetrical, lobular, and infiltrative tumor invading from the dermis into the subcutaneous tissue. (basicmedicalkey.com)
  • A mixed tumor is a tumor that derives from multiple tissue types. (wikipedia.org)
  • A biplastic tumor or biphasic tumor has two tissue types. (wikipedia.org)
  • Some sources require the included tissue types to be neoplastic for the definition of mixed tumor. (wikipedia.org)
  • A teratoma is the main tumor type that often includes more than two tissue types. (wikipedia.org)
  • Methods: Flow cytometric analysis of DNA pliody and S-Phase Fraction (SPF) was done in 50 fresh tumor tissue sections of SGTs which diagnosed as 15 benign and 35 malignant tumors. (researchgate.net)
  • The variations found were recorded in a spreadsheet of the program Microsoft Excel®, and then grouped up into categories according to criteria described in the literature (Raskin & Meyer 2003), which are: normal or hyperplasic tissue, cystic formation, inflammation, response to tissue injury, tumors and nondiagnostic sample. (vin.com)
  • Only 3 benign breast tumour tissues (12.5%) and none of the healthy breast tissue specimens were HPV-DNA-positive. (who.int)
  • The ocular tissue where these tumors arise, the uvea, is a densely pigmented layer that lies for the most part between the sclera and the retina. (medscape.com)
  • Peritoneal MMMT are frequently associated with gynecologic tumors. (bmj.com)
  • 1 - 3 Intracranial brain tumors, most commonly medulloblastoma [ Figure 2 ], can metastasize to the peritoneal cavity via ventriculo-peritoneal shunts used to divert excess cerebrospinal fluid. (cytojournal.com)
  • Testicular germ cell tumors usually occur before the age of 4 years or in adolescents and young adults. (cigna.com)
  • In children younger than 11 years, extragonadal extracranial germ cell tumors usually occur at birth or in early childhood. (cigna.com)
  • Most salivary gland tumors are benign and occur in the parotid glands. (merckmanuals.com)
  • Other benign tumors include papillary cystadenoma lymphomatosum (also known as Warthin tumors), oncocytomas, and adenomas. (merckmanuals.com)
  • Microscopically, hemorrheage and necrosis are found, and tumor cells resemble placental trophoblastic cells: cytotrophoblast (CT), intermediate trophoblast (IT), and syncytiotrophoblast (ST). The CT and IT tend to grow in clusters and sheets separated by ST. The typical pattern of choriocarcinoma has been called two cell pattern, biphasic-terms that reflect the relatively regular, alternating arrangement of CT and ST in the tumor interspread with intermediate trophoblast. (atlasgeneticsoncology.org)
  • Erosion of the tumor into blood vessels in adjacent tissues, or areas of necrosis within the tumor, can lead to hyphema or vitreous hemorrhage. (medscape.com)
  • It delineates the location, nature, extent and spread of the tumour and the anatomical relation of the tumour with the facial nerve and the internal architecture of the gland. (ispub.com)
  • MRI has a role in these patients in determining tumor extent and suitable therapy. (radiopaedia.org)
  • CT and MRI locate the tumor and describe its extent. (merckmanuals.com)
  • A thorough history and physical examination help to assess the extent of tumor. (medscape.com)
  • This study retrospectively analyzed serum lymphocyte subsets and survival outcomes in intracranial germ cell tumors (iGCTs) patients. (researchsquare.com)
  • Intracranial Germ Cell Tumors (iGCTs) are rare brain tumors that originate from embryonic germ cells. (researchsquare.com)
  • Choriocarcinoma of the ovary is a highly malignant ovarian tumor which is characterized pathologically by the presence of trophoblastic malignant cells, and biochemically by the production of the pregnancy hormone human chorionic gonadotrophin (hCG) in the absence of an ongoing pregnancy. (atlasgeneticsoncology.org)
  • This disease is classified two types in origin, gestational choriocarcinoma and nongestational germ cell tumor. (atlasgeneticsoncology.org)
  • The nongestational type is as a component of a mixed germ cell tumor and a pure ovarian choriocarcinoma is a very rare malignant tumor. (atlasgeneticsoncology.org)
  • In nongestational choriocarcinoma, no factors have been associated with the etiology of germ cell tumor, apart from an increased incidence associated with dysgenetic gonads. (atlasgeneticsoncology.org)
  • Nongestational choriocarcinoma arises in women under 40 years old because of germ cell tumor, and the frequency is reported less than 0.6% of all ovarian tumors. (atlasgeneticsoncology.org)
  • 6 , 8 ] Prognosis was poor for patients with large tumors when more than one-third of the tumor was composed of endodermal sinus elements, choriocarcinoma, or grade 3 immature teratoma. (kaiserpermanente.org)
  • Some of these mutations, such as (mixed-lineage leukemia) MLL fusions, are highly aggressive and can generate leukemia very quickly. (lu.se)
  • Malignant mixed müllerian tumor (MMMT) is a rare tumor. (bmj.com)
  • Based upon the histological grade of the tumour and TNM staging, the type of surgery is decided. (ispub.com)
  • The aim of this report is to analyze the histological features, diagnosis and treatments of the tumor. (scirp.org)
  • The diagnosis is complex because of the great histological variety and biological behavior of this tumor, a histopathological examination being essential. (bvsalud.org)
  • For ulcerative lesions, obtaining a biopsy specimen from closer to the edge of the tumor is important to avoid the necrotic central component. (medscape.com)
  • Of patients with malignant parotid tumors, 7-20% present with facial nerve weakness or paralysis, which almost never accompanies benign lesions and indicates a poor prognosis. (medscape.com)
  • Immunohistochemical staining for cytokeratin 5/6 was applied on cell block sections of 23 cases of benign and 25 cases of malignant breast lesions using avidin biotin peroxidase technique. (ijpmonline.org)
  • The staining reaction in the malignant lesions was only cytoplasmic and the intensity was significantly less than that of benign lesions. (ijpmonline.org)
  • This antibody is also used as a component of panels to differentiate benign and malignant breast lesions. (ijpmonline.org)
  • Reactive or adaptive changes to a tumor does not count towards a classification as mixed. (wikipedia.org)
  • Tumour classification systems provide the foundation for tumour diagnosis and patient therapy and a critical basis for epidemiological and clinical studies. (ersjournals.com)
  • There has been substantial evolution of concepts in neuroendocrine lung tumour classification. (ersjournals.com)
  • An international system of tumour classification is important for consistency in patient treatments and to provide the basis of epidemiological and biological studies. (ersjournals.com)
  • Currently, the 2004 WHO classification of renal tumors recognizes this transformation as "sarcomatoid change" or "sarcomatoid features" arising within RCC, rather than as a separate histologic entity. (medscape.com)
  • Histopathological examination of the tumor mass revealed an admixture of spindle cells and epithelioid cells. (cytojournal.com)
  • Germ cell tumors of the ovary are uncommon but aggressive tumors, seen most often in young women and adolescent girls. (kaiserpermanente.org)
  • It has a propensity for perineural invasion and spread, with disease potentially extending many centimeters from the main tumor mass. (merckmanuals.com)
  • Directionally encoded color track density imaging in brain tumor patients: A potential application to neuro-oncology surgical planning. (dana-farber.org)
  • Our brain tumor specialists have extensive expertise in treating all types of brain tumors, including ganglioglioma. (childrenshospital.org)
  • Molecular imaging with whole‐body positron emission tomography (PET)/CT or PET/MRI utilizes metabolic and receptor‐based strategies for tumor detection in staging and restaging various cancers. (radiologykey.com)
  • L'objectif de cette étude était de déterminer la fréquence des cancers gynécologiques en pratique oncologique à Lomé et d'en étudier les aspects épidémiologiques et histo-cliniques. (bvsalud.org)
  • Il s'agitd'une étude rétrospective et descriptive portant sur tous les cancers gynécologiques reçus en oncologie entre le 1erJanvier 2016 et le 31 Décembre 2021. (bvsalud.org)
  • 1 ] Two Gynecologic Oncology Group trials reported that 89 of 93 patients with stage I, II, or III disease who had completely resected tumors were disease free after three cycles of BEP. (kaiserpermanente.org)
  • these are discussed in detail in the Medscape Reference article Benign Parotid Tumors . (medscape.com)