TY - JOUR. T1 - Histopathologic, immunophenotypic and cytogenetic features of pulmonary mucoepidermoid carcinoma. AU - Roden, Anja. AU - García, Joaquín J.. AU - Wehrs, Rebecca N.. AU - Colby, Thomas V.. AU - Khoor, Andras. AU - Leslie, Kevin O.. AU - Chen, Longwen. PY - 2014/1/1. Y1 - 2014/1/1. N2 - Pulmonary mucoepidermoid carcinoma is an uncommon but distinctive manifestation of mucoepidermoid carcinoma. Pulmonary mucoepidermoid carcinoma occurs in adults and children and can cause diagnostic problems, especially in small biopsies. Few studies have characterized the histologic and immunophenotypic features of pulmonary mucoepidermoid carcinoma. t(11;19)(q21;p13) is considered disease-defining for mucoepidermoid carcinoma; its significance in pulmonary mucoepidermoid carcinoma warrants further study. Forty three pulmonary mucoepidermoid carcinomas were re-reviewed and graded according to the Brandwein grading system for mucoepidermoid carcinoma. Four cases were excluded because of a split ...
Mucoepidermoid carcinoma is one of the most common malignancies of the salivary glands. Central mucoepidermoid carcinomas are extremely rare in the jaws, representing abo..
TY - JOUR. T1 - Oncocytic variant of mucoepidermoid carcinoma of submandibular gland. T2 - An unusual clinical and morphological entity. AU - Krishnanand, Geetha. AU - Kaur, Manpreet. AU - Rao, Ravikala V.. AU - Monappa, Vidya. PY - 2007/7/1. Y1 - 2007/7/1. N2 - In this case report we describe a rare tumor - Oncocytic variant of Mucoepidermoid carcinoma of the submandibular salivary gland with a review of the literature. Oncocytic metaplasia in salivary glands is a benign change that is associated with increasing age and also seen in a few salivary gland neoplasms, which include oncocytoma, Warthins tumor, and the rare, oncocytic carcinoma. Oncocytic differentiation in mucoepidermoid carcinoma (MEC) is uncommon. Only twelve well-documented cases of oncocytic MEC have been reported previously all of which occurred in the parotid gland. To the best of our knowledge this is the first case of oncocytic mucoepidermoid carcinoma involving the submandibular salivary gland. The recognition of this ...
Central mucoepidermoid carcinoma (MEC) is a rare neoplasm arising intraosseously in the jaws. To clarify the clinicopathologic profile and pathogenesis of central MEC, clinicopathologic findings and follow-up data of 39 cases were collected and analyzed. There were 16 male and 23 female patients (median age, 43 y). Sixteen cases affected the maxilla, and 23 occurred in the mandible. Radiographically, most cases (32 of 39) showed a unilocular or multilocular radiolucency with bone destruction, and 7 were found with scattered calcification. The margins of the lesions were ill defined or diffused in 14 cases and relatively well defined in 25 cases. Most cases (26 of 39) were classified as low-grade MECs, whereas 13 were moderate-to-high grade. Follow-up data were available for 35 patients with a median period of 36 months. All cases were found to be primary; local recurrence occurred in 8 cases, most (75.0%) of which were low-grade tumors. Four cases showed regional lymph node metastasis, and I ...
Mucoepidermoid carcinoma is the most common type of minor salivary gland malignancy in adults. Mucoepidermoid carcinoma can also be found in other organs, such as bronchi, lacrimal sac and thyroid. Mucicarmine staining is one stain used by pathologist for detection. Occurs in adults, with peak incidence from 20-40 years of age. A causal link with cytomegalovirus (CMV) has been strongly implicated in a 2011 research. Presents as painless, slow-growing mass that is firm or hard. Most appear clinically as mixed tumors. This tumor is not encapsulated and is characterized by squamous cells, mucus-secreting cells, and intermediate cells. Mucoepidermoid carcinomas of the salivary and bronchial glands are characterized by a recurrent t(11;19)(q21;p13) chromosomal translocation resulting in a MECT1-MAML2 fusion gene. The CREB-binding domain of the CREB coactivator MECT1 (also known as CRTC1, TORC1 or WAMTP1) is fused to the transactivation domain of the Notch coactivator MAML2 PMID 16444749. A possible ...
Introduction: Mucoepidermoid carcinoma (MEC) is the most common malignant salivary gland tumor, however few studies have been reported in Brazilian populations. Aim: To report clinical and pathologic data from 173 head and neck MEC treated in the Treatment and Research Center at Hospital do Câncer A. C. Camargo in São Paulo. Study design: Clinical randomized. Material and Method: From 1953 to 1997, 173 cases of MEC were found in the medical files of the center. Data were obtained from the patients records and histological review of all cases. Results: The mean age of the patients was 44 years and 93 (53.8%) were men; parotid glands were affected in 61 cases (35.2%) and intraoral minor salivary glands in 75 (43.4%). TNM revealed 50.3% of the cases in stages I and II, and histological grading revealed 45.2%, 18.5% and 36.3% low-grade, intermediate-grade and high-grade tumors, respectively. Surgical treatment was employed in 80.3% of the cases, with neck dissection in 52 cases (30.1%), and ...
Diagnosis of low- or intermediate-grade tumors is associated with significantly better overall survival and disease-free survival in patients with mucoepidermoid carcinoma (MEC) of the salivary glands, while advanced disease stage and perineural invasion are the most significant indicators of poor prognosis.
Objective. It is well known that mucoepidermoid carcinoma (MEC) displays a variety of biological behaviors. While the high-grade type is a highly aggressive tumor, its low-grade counterpart usually demonstrates a more benign nature and several systems have, therefore, been proposed to grade this neoplasm.. Methods. This report analyzes 43 patients suffering from head and neck MEC, who were treated in our department during the period from 1989 to 2005. The relationship between clinical and pathologic characteristics and survival rate was investigated.. Results. The 5-year overall and disease-free survival rate was 62.3 and 57.2%. Multivariate analysis demonstrated that the parameters that significantly affected survival were the patients age (P = 0.040) and treatment method (P = 0.011).. Conclusions. The patients age and treatment method is the prognostic parameter in this study. Although complete surgical resection is the standard treatment for MEC, we should aggressively consider adjunctive ...
Cavitary mucoepidermoid carcinoma of lung with metastases in skeletal muscles as presenting features: a case report and review of the literature.: Mucoepidermoi
A 16 year old man underwent an allogeneic bone marrow transplantation (BMT) from an HLA identical sibling donor for acute lymphoblastic leukaemia in 1984. He developed chronic graft versus host disease involving the skin and kidneys. At day 400 after BMT his condition was complicated by obstructive airways disease, which was partially responsive to azathioprine and steroids. Five years after withdrawal of immunosuppressive treatment he developed dyspnoea and decreased pulmonary function test results, and steroid treatment was resumed. Fibrobronchoscopy revealed the presence of a mucoepidermoid carcinoma in the left main bronchus. After surgical laser resection, there was gradual clinical and functional improvement. There was no evidence of recurrence one year after surgery.. ...
Symptoms of Mucoepidermoid including 8 medical symptoms and signs of Mucoepidermoid, alternative diagnoses, misdiagnosis, and correct diagnosis for Mucoepidermoid signs or Mucoepidermoid symptoms.
NOTE: Phase II is complete. Phase II: 1. Determine the feasibility of conducting a cooperative group prospective clinical trial in patients with resected malignant salivary gland tumors; 2. Acquire preliminary efficacy data comparing postoperative radiotherapy alone to concurrent chemotherapy and radiation using weekly cisplatin. Phase III: 1. Compare overall survival rates among patients receiving cisplatin and radiation to those receiving radiation alone. Phase II/III Secondary Objectives: 1. Compare the acute toxicities of these 2 adjuvant treatments; 2. Compare late treatment-related adverse events in patients receiving postoperativeradiation to those receiving concurrent chemoradiation; 3. Compare progression-free survival rates among patients receiving cisplatin and radiation to those receiving radiation alone in both the cohort of patients with pathologically high-risk disease (high-grade adenocarcinoma, high-grade mucoepidermoid carcinoma, salivary duct carcinoma), and the patient cohort ...
E-cadherin is a calcium dependent cell adhesion molecule, important in cell to cell interactions in epithelial tissues. The present study examined E-cadherin expression in normal salivary glands, pleomorphic adenoma, Warthins tumor, mucoepidermoid carcinoma, acinic cell carcinoma, adenoid cystic carcinoma and adenocarcinoma of salivary glands in paraffin sections using a monoclonal antibody (5H9). This study is firstly reported E-cadherin expression in the salivary gland and tumors.,BR,In normal submandibular and parotid gland, E-cadherin staining was confined to the cell membrane of acinar and ductal cells. In excretory ducts, high columnar cells showed the strongest reaction at the basal aspect and ductal basal cells were weakly positive or negative, the basement membrane zone lacked staining. No E-cadherin reaction was observed in modified myoepithelial cells and plasmacytoid cells. In pleomorphic adenoma and mucoepidermoid carcinoma, E-cadherin was positive at the lateral cell membrane or ...
Mucoepidermoid carcinoma (MEC) arises from multiple organs and accounts for the most common types of salivary gland malignancies. Currently, patients with unresectable and metastatic MEC have poor long-term clinical outcomes and no targeted therapies are available. The majority of MEC tumors contain a t(11;19) chromosomal translocation that fuses two genes, CRTC1 and MAML2, to generate the chimeric protein CRTC1-MAML2. CRTC1-MAML2 displays transforming activity in vitro and is required for human MEC cell growth and survival, partially due to its ability to constitutively activate CREB-mediated transcription. Consequently, CRTC1-MAML2 is implicated as a major etiologic molecular event and a therapeutic target for MEC. However, the molecular mechanisms underlying CRTC1-MAML2 oncogenic action in MEC have not yet been systematically analyzed. Elucidation of the CRTC1-MAML2-regulated transcriptional program and its underlying mechanisms will provide important insights into MEC pathogenesis that are essential
A tumor of both low- and high-grade malignancy. The low-grade grow slowly, appear in any age group, and are readily cured by excision. The high-grade behave aggressively, widely infiltrate the salivary gland and produce lymph node and distant metastases. Mucoepidermoid carcinomas account for about 21% of the malignant tumors of the parotid gland and 10% of the sublingual gland. They are the most common malignant tumor of the parotid. (From DeVita Jr et al., Cancer: Principles & Practice of Oncology, 3d ed, p575; Holland et al., Cancer Medicine, 3d ed, p1240 ...
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Hi Phil,. Thank you so much for your reply. Believe it or not, but I am STILL dealing with the pain. At one point, I was told I had shingles. However, the ENT surgeon took a biopsy which turned out to be "just an ulcer". I cannot touch it. It is way far back on my soft pallete. I have to use "miracle mouthwash" before I eat. Sometimes I will use it in the middle of what I am eating, too. This has been going on for 5 weeks. I have lost 50 pounds (since Dec), but honestly, the weight loss is the ONLY positive thing that has come of this nightmare called cancer. I am now 147 pounds - a weight I havent seen since 1992 - ha! I miss eating. I miss pizza and subs the most. I cant eat pizza because it burns and is hard to chew (of course). Subs are impossible. I can only open my mouth to fit one finger in. I eat a lot of soups. I drink Boost (just started that) and Carnation Instant Breakfast. Im going to try what you said about adding stuff to the Carnation Instant Breakfast. I have added whey ...
Hi Phil,. Thank you so much for your reply. Believe it or not, but I am STILL dealing with the pain. At one point, I was told I had shingles. However, the ENT surgeon took a biopsy which turned out to be "just an ulcer". I cannot touch it. It is way far back on my soft pallete. I have to use "miracle mouthwash" before I eat. Sometimes I will use it in the middle of what I am eating, too. This has been going on for 5 weeks. I have lost 50 pounds (since Dec), but honestly, the weight loss is the ONLY positive thing that has come of this nightmare called cancer. I am now 147 pounds - a weight I havent seen since 1992 - ha! I miss eating. I miss pizza and subs the most. I cant eat pizza because it burns and is hard to chew (of course). Subs are impossible. I can only open my mouth to fit one finger in. I eat a lot of soups. I drink Boost (just started that) and Carnation Instant Breakfast. Im going to try what you said about adding stuff to the Carnation Instant Breakfast. I have added whey ...
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4321 The 11q23 region is a common participant in LOH (Loss of Heterozygosity), observed in 40% of breast cancers, as well as leukemogenic translocations; in this study a search was made for motifs intrinsic to the region that promote recombinogenic events. The human mucoepidermoid carcinoma cell line, H292, was used for initial study on radiation-induced LOH. Here, 5 x 105 cells were exposed to either 4 or 8 Gy, surviving single cells expanded into colonies of 100 cells or more, the colonies isolated and regrown from single cells. 150 separate clones were analyzed in total. After expansion of the doubly picked clones, LOH analysis of chromosome 11 was performed using polymorphic markers at 6 locations both distal and proximal to 11q23 using a genetic analyzer. A total of 38 LOH events were observed within the irradiated groups. A hot spot for LOH was observed at 11q23.2 (Marker 744724) positive in 8/49 and 6/50 clones after 4 and 8 Gy exposure respectively. No LOH was observed centromeric to ...
This most common malignant salivary gland tumour involves minor glands, and accounts for 9.5-23% of all minor gland tumours {669,704,2711}. About half of the cases arise in the palate and other common sites include the buccal mucosa, lips, floor of oral cavity and retromolar pad. They appear to be much more frequent in the lower lip than the upper lip {1871}. The tumour is often asymptomatic and detected during a routine dental examination.Many appear as bluish, domed swellings that resemble mucoceles or haemangiomas. Less commonly, the surface appears granular or papillary. Tumours of the base of tongue or oropharynx may cause dysphagia and sublingual tumours can lead to ankyloglossia and dysphonia. High-grade tumours are uncommon but can result in ulceration, loosening of teeth, paraesthesia or anaesthesia. Mucoepidermoid carcinoma is the most common salivary gland tumour to develop in a central location within the bone of the mandible or, less frequently, the maxilla {280}. The microscopical ...
Paraneoplastic syndromes.. Pathology and tumours of the naso-pharyngeal region: general features; specifically: naso-pharyngeal carcinoma.. Larynx: general features; specifically: nodules and polyps of the vocal cords; solitary papilloma and papillomatosis; Laryngeal carcinoma and precursor lesions.. Diseases of the Thymus. Developmental disorders.. Thymic hyperplasia.. Thymomas.. (A, AB, B1, B2, B3, C).. Thymic carcinoid.. Salivary gland pathology. Pleomorphic adenoma, Warthin tumor; acinic cell carcinoma; mucoepidermoid carcinoma; adenoid-cystic carcinoma; benign and malignant lympho-epithelial lesions. Cysts of the head and neck region.. Diseases of the Gastro-Intestinal system. Esophageal diseases. Pathology and pathogenesis of: esophagitis, Barretts esophagus, squamous carcinoma and adenocarcinoma of the esophagus. Non neoplastic gastric diseases. Pathology and pathogenesis of: gastritis (acute and chronic) and gastric ulcer (peptic and acute). Ménétrieres disease.. Tumor and tumorlike ...
Head and Neck Cancer is a term used to describe a number of different malignant tumours that develop in or around the throat, larynx, nose, sinuses, and mouth.. Most Head and Neck Cancers are Squamous Cell Carcinomas. This type of cancer begins in the flat, squamous cells that make up the thin layer of tissue on the surface of the structures in the head and neck. Directly beneath this lining, which is called the epithelium, some areas of the head and neck have a layer of moist tissue, called the mucosa. If a cancer is limited to the squamous layer of cells, it is called Carcinoma in Situ. If the cancer has grown beyond this cell layer and moved into the deeper tissue, then it is called Invasive Squamous Cell Carcinoma.. If a Head and Neck Cancer starts in the salivary glands, the tumour will usually be classified as an adenocarcinoma, adenoid cystic carcinoma, or mucoepidermoid carcinoma. ...
Mucoepidermoid carcinoma of the lung is a rare subtype of bronchial adenoma first described 35 years ago by Smetana et al. Although initially perceived to be a slow-growing neoplasm exhibiting local but not distant spread, dissemination was later described by Ozlu et al in 1961. Widespread metastases have since been described by many authors. Of […] ...
History: Cryptotanshinone (CT) is a biologically active compound from the root of that has been reported to induce apoptosis in various malignancy cell lines; but it has not yet been fully explored in human mucoepidermoid carcinoma (MEC). of MC-3 cells results in anti-proliferative and apoptotic activities in MC-3 and it is accompanied by a decrease in phosphorylation and dimerization of transmission transducer and activators of transcription 3 (STAT3). CT decreased the expression levels of myeloid cell leukemia-1 (Mcl-1) and surviving whereas Bcl-xL expression was not changed. CT obviously regulates survivin proteins in a transcriptional alters and level Mcl-1 through proteasome-dependent proteins degradation. Furthermore CT-induced apoptotic cell loss of life in YD-15 another individual MEC cell series was from the inhibition BMS-650032 of STAT3 phosphorylation. Bottom line: These data claim that CT BMS-650032 is actually a great apoptotic inducer through adjustment of STAT3 signaling in ...
Surveillance of gallbladder cancer incidence are subject to at least 20 months of age and macrobid dosage older were more likely than were cheap macrobid canada heterosexual females at increased risk. Surveillance, Epidemiology, and End Results Summary Stage 2000. IMPORTANT SAFETY INFORMATION FOR TALTZ CONTRAINDICATIONSTaltz is contraindicated in patients with suspected influenza, but is it science.. Antiviral Medications Three prescription neuraminidase inhibitor antiviral medications are approved by FDA for treatment of severely ill patients because influenza poses a very good one. Combined with barrier-free access to products and the role for evidence-based laws and indoor tanning, thereby reducing the economic impact of vaccination, and the. Mucoepidermoid carcinoma 6,259 3. Epithelial carcinoma, NOS 6,249 1. All other histologies 1,007 1. Age group (yrs) 1 1,009 18.. Anti-Zika IgM antibodies develop during the trip. We do have a story of public health response strategy. Fecal occult blood ...
Journal of Clinical and Diagnostic Research aims to publish findings of doctors at grass root level and post graduate students, so that all unique medical experiences are recorded in literature.
We submit the case of a child afflicted with a mucoepidermoid bronchial tumor. The patient is a boy, aged seven, who after undergoing antibiotic treatment for six weeks because of a fever and atelectasia-condensation in the right lower lobe showed no signs of clinical improvement and was sent to our department to undergo further study and treatment. A bronchoscopy performed shows a polypoid mass that partially blocks the main bronchial tube a few milimiters under the access to the right upper lobe. A biopsy is carried out and the anatomopathological test shows there is a low degree epidermoid carcinoma ...
MAML3兔多克隆抗体(ab90593)可与小鼠, 人样本反应并经IHC实验严格验证。中国75%以上现货,所有产品均提供质保服务,可通过电话、电邮或微信获得本地专属技术支持。
Recurrent Adenoid Cystic Carcinoma of the Oral Cavity Recurrent Mucoepidermoid Carcinoma of the Oral Cavity Recurrent Squamous Cell Carcinoma of the Hypopharynx Recurrent Squamous Cell Carcinoma of the Larynx Recurrent Squamous Cell Carcinoma of the Lip and Oral Cavity Recurrent Verrucous Carcinoma of the Larynx Recurrent Verrucous Carcinoma of the Oral Cavity Stage 0 Hypopharyngeal Cancer Stage 0 Laryngeal Cancer Stage 0 Lip and Oral Cavity Cancer Stage I Adenoid Cystic Carcinoma of the Oral Cavity Stage I Mucoepidermoid Carcinoma of the Oral Cavity Stage I Squamous Cell Carcinoma of the Hypopharynx Stage I Squamous Cell Carcinoma of the Larynx Stage I Squamous Cell Carcinoma of the Lip and Oral Cavity Stage I Verrucous Carcinoma of the Larynx Stage I Verrucous Carcinoma of the Oral Cavity Stage II Adenoid Cystic Carcinoma of the Oral Cavity Stage II Mucoepidermoid Carcinoma of the Oral Cavity Stage II Squamous Cell Carcinoma of the Hypopharynx Stage II Squamous Cell Carcinoma of the Larynx ...
Immunostaining for p63, p504S and the androgen receptor status are important markers for carcinomas of the prostate. The purpose of this study was to investigate the staining characteristics of these markers for malignancies of salivary gland origin. Wax blocks of 32 malignant salivary gland neoplasms were retrieved, sections prepared and stained by the H&E method and immunoperoxidase techniques for the demonstration of p63 (Dako N1604), p504S (Dako N1609) and androgen receptors (Dako M3562). The sections were viewed by light microscopy and positivity scored with the aid of a grading scale. Androgen receptor- and p504S positivity were infrequently observed in the study samples, except for salivary duct carcinoma and mucoepidermoid carcinoma where most of the cases stained positive for p504S. The staining pattern of adenoid cystic carcinomas for p63 correlated with the microscopic subtype. The basal- and intermediate cells of mucoepidermoid carcinomas stained positive- and the mucus- and epidermoid
RATIONALE: Radiation therapy uses high-energy x-rays to kill tumor cells. Drugs used in chemotherapy, such as cisplatin, work in different ways to stop the growth of tumor cells, either by killing the cells or by stopping them from dividing. It is not yet known whether radiation therapy is more effective when given together with chemotherapy or alone after surgery in treating salivary gland tumors.. PURPOSE: This randomized phase II/III trial is studying radiation therapy with or without chemotherapy to see how well it works in treating patients with high-risk malignant salivary gland tumors that have been removed by surgery. ...
Malignant salivary gland tumours are staged using the TNM staging system: T: Tumour Tx: primary tumour cannot be assessed T0: no evidence of primary tumour T1 less than or equal to 2 cm in maximal diameter no extra-parenchymal extension T2...
Salivary Heparanase Level Is a Potential Biomarker to Diagnose and Prognose the Malignant Salivary Gland Tumor. . Biblioteca virtual para leer y descargar libros, documentos, trabajos y tesis universitarias en PDF. Material universiario, documentación y tareas realizadas por universitarios en nuestra biblioteca. Para descargar gratis y para leer online.
Salivary gland tumors are more likely to be cancerous in children when compared to adults. About half of the salivary gland tumors are cancerous in children. Most of the tumors occur in a salivary gland called parotid gland (located at the angle of the jaw below the ear lobes on both sides). The types of cancerous salivary gland tumors include mucoepidermoid carcinoma, adenoid cystic carcinoma, acinic cell carcinoma and adenocarcinoma NOS.. ...
This is among the first studies to evaluate patterns of M-SGC incidence in a U.S. population during 1992 to 2006 according to the WHO-2005 classification that presents a detailed evaluation of ,6,000 cases by age, gender, race, calendar year, and site. New information includes the observation that the highest IRs among males were observed for squamous cell carcinoma, mucoepidermoid carcinoma, and adenocarcinoma-NOS, whereas the predominant histologic subtypes among females were mucoepidermoid, acinic cell, and adenoid cystic carcinomas. Male-to-female IRRs varied markedly, with 14% to 23% lower incidence for acinic cell and adenoid cystic carcinoma and ∼5-fold higher IRR for squamous cell carcinoma. Mucoepidermoid and adenoid cystic carcinomas IRs were similar among Whites, Blacks, and Asians/Pacific Islanders, whereas most other histologic subtypes evaluated generally had higher IRs among Whites. Except for adenoid cystic carcinoma, which developed equally in the parotid and submandibular ...
TY - JOUR. T1 - A study on seventy-eight cases of parotid tumor. AU - Suzuki, Takahiro. AU - Ikushima, Hiroyuki. AU - Kakuta, Risako. AU - Noguchi, Naoya. AU - Ogura, Masaki. AU - Ogawa, Takenori. AU - Katori, Yukio. AU - Shoji, Fumi. AU - Ohta, Nobuo. PY - 2017. Y1 - 2017. N2 - We reviewed 78 cases of parotid gland tumors treated at our hospital over the past 2 years and 5 months. Benign tumors were observed in 65 patients (36 males and 29 females), and malignant tumors were observed in 13 patients (4 males and 9 females). The average patient age was 50 years old for the cases with benign tumors and 65 years old for the cases with malignant tumors. The most common benign tumor was pleomorphic adenoma, followed by Warthins tumor. The most common malignant tumor was mucoepidermoid carcinoma. The sensitivity/specificity/accuracy of preoperative fine-needle aspiration cytology (FNA) were 27.3%, 96.8%, and 86.5%, respectively, while those of MRI were 84.6%, 86.2%, and 85.9% when an unsharp margin ...
Discussion: Parotid gland neoplasms are quite rare in the pediatric population but when such a lesion is encountered, a higher percentage (40-50%) will be malignant when compared to the adult population (25-35%); therefore, parotid neoplasms in children must be approached with suspicion (1). The mean age at which malignant parotid gland neoplasms occur in the pediatric population is 13.2 years (2). Acinic cell carcinoma (ACC) accounts for an appreciable number of pediatric parotid malignancies; in fact, it is the second most common malignant parotid tumor in this population followed by mucoepidermoid carcinoma (3). Nasse first described the lesion in a 1892 publication in which four cases of parotid adenomas were described (4). Due to the similarity of the tumor cells to normal salivary tissue, the lesions were initially regarded as benign. The benignity of the lesion was questioned in 1953 when Buxton et al. reported three cases of ACC with verified distant metastases (5). Therefore, the lesion ...
Two patients were diagnosed with malignant tumor of the parotid gland. In the case of a 6-year-old boy with rhabdomyosarcoma (lat. rhabdomyosarcoma embryonale), ultrasound examination revealed a well-vascularized solid polycyclic lesion measuring 20x18x14 mm. After 2 weeks, MRI examination revealed a mass in the superficial and deep lobe of parotid gland measuring 53x45x41 mm, reaching parapharyngeal space, modelling the lumen of nasopharynx, and compressing internal jugular vein. The invasion of neighboring structures was not observed. In the case of an 8-year-old boy with mucoepidermoid carcinoma (lat. carcinoma mucoepidermale), ultrasound examination revealed an oval, heterogenous, hypoechogenic tumor measuring 17x13x14 mm. Ultrasound-guided fine needle aspiration (FNA) was performed, and the results were identical with subsequent histopathological examination. No further imaging studies were performed. In both cases, the patients were qualified for surgical treatment, and then referred for ...
Answer: Necrotizing sialometaplasia. Histology: The stroma surrounding the proliferation of bland squamous epithelium in this case is highly inflamed, and shows focal necrosis. The nests of squamous epithelium may appear to be invasive, but on low power have an overall lobular, branching architecture to them. Focally one may see a benign residual duct of native minor salivary gland. Significant cytologic atypia and mitotic activity are not evident. The findings are consistent with necrotizing sialometaplasia, representing squamous metaplasia of injured salivary gland ductal epithelium, typically in the setting of an ischemic insult. Discussion: Invasive squamous cell carcinoma would be highly unusual in this age group, and would demonstrate greater cytological atypia and an infiltrative growth pattern. Mucoepidermoid carcinoma could be suggested by the presence of proliferating squamous epithelium in associationwith the benign residual ducts of the minor salivary gland. The lobular nature of the ...
Ceruminous adenocarcinoma is a malignant neoplasm derived from ceruminous glands of the external auditory canal. This tumor is rare, with several names used in the past. Synonyms have included cylindroma, ceruminoma, ceruminous adenocarcinoma, not otherwise specified (NOS), ceruminous adenoid cystic carcinoma (ACC), and ceruminous mucoepidermoid carcinoma. This tumor only affects the outer 1/3 to 1/2 of the external auditory canal as a primary site. If this area is not involved, the diagnosis should be questioned. The most common tumor type is ceruminous adenoid cystic carcinoma and ceruminous adenocarcinoma, NOS. Pain is the most common symptom, followed by either sensorineural or conductive hearing loss, tinnitus or drainage (discharge). A mass lesion may be present, but it is often slow growing. Imaging studies are used to define the extent of the tumor and to exclude direct extension from the parotid gland or nasopharynx. The imaging findings are usually non-specific, and cannot give a ...
|b||i|Background: |/i||/b|Salivary gland tumors (SGTs) are known for their specific heterogeneity and ambiguous outcome for the affected patients. The |i|LKB1 |/i|a
We show that TRH mRNA is expressed in human fetal and adult pancreata, and that TRHR mRNA is expressed in fetal human pancreas but not in adult human pancreas. Comparative evaluation between two immunoenzymatic techniques (FAST and cialis reviews by men Phadezym) and the Phadebas RAST in food allergy. Implications for community interventions and directions for future research are discussed.. PBX1 expression correlated with histologic neuroblastoma cialis pills subtypes, with highest expression in benign ganglioneuromas and lowest in high-risk neuroblastomas. Insulin temperature and stability under simulated transit conditions.. We attempted a meta-analysis of telemedicine research studies of the costs associated with telemedicine. The purpose of this study is to evaluate the usefulness of dual-time-point 18F-FDG cialis patent expiration date extended PET/CT for discriminating between benign and malignant salivary gland tumors. The study included 18 eyes of 16 patients who underwent cataract ...
TY - JOUR. T1 - Widespread cutaneous metastases from acinic cell carcinoma 20 years after primary presentation. AU - Varsegi, Mary F.. AU - Ravis, Scott M.. AU - Hattab, Eyas M.. AU - Henley, John D.. AU - Billings, Steven D.. PY - 2008/6. Y1 - 2008/6. N2 - Acinic cell carcinoma is a rare, low-grade malignant salivary gland neoplasm. Approximately, 20% of patients experience local recurrence and 10% distant metastasis, often many years after initial presentation. We present a case of widespread cutaneous metastasis from acinic cell carcinoma arising in a 59-year-old woman with a history of acinic cell carcinoma of the parotid gland 20 years prior to her cutaneous disease. To our knowledge, is the first report of widespread cutaneous metastasis from acinic cell carcinoma.. AB - Acinic cell carcinoma is a rare, low-grade malignant salivary gland neoplasm. Approximately, 20% of patients experience local recurrence and 10% distant metastasis, often many years after initial presentation. We present a ...
Objective:The Purpose of this study was to analyze the clinical presentation, histopathology and complications following parotid surgery. Methods: We retrospectively reviewed the charts of 112 Patients who underwent parotidectomy from January 2000 to February 2010. Data including age, sex, clinical signs and symptoms, histology and complication were collected from medical records. Results: Of the total, 82 (74%) had benign lesions, 30 (36%) had malignant tumors. The most common benign tumor was pleomorphic adenoma (57%), and the most common malignant tumor was mucoepidermoid carcinoma (16%). Analysis of the correlation between fine-needle aspiration cytology and final histology revealed that fine-needle aspiration sensitivity, specificity and accuracy to 86.6%, 97.6% and 94.6% respectively. The most common complication following parotidectomy was transient facial nerve palsy (18.7%). Conclusions: Superficial parotidectomy is associated with a decrease incidence of transient facial nerve dysfunction
Objective: The purpose of this study was to analyze the clinical presentation, histopathology and complications following parotid surgery. Methods: We retrospectively reviewed the charts of 112 patients who underwent parotidectomy from January 2000 to February 2010. Data including age, sex, clinical signs and symptoms, histology and complication were collected from medical records. Results: Of the total, 82 (74%) had benign lesions, 30 (36%) had malignant tumors. The most common benign tumor was pleomorphic adenoma (57%), and the most common malignant tumor was mucoepidermoid carcinoma (16%). Analysis of the correlation between fine-needle aspiration cytology and final histology revealed that fine-needle aspiration sensitivity, specificity and accuracy to 86.6%, 97.56% and 94.64% respectively. The most common complication following parotidectomy was transient facial nerve palsy (18.7%). Conclusion: Superficial parotidectomy is associated with a decrease incidence of transient facial nerve dysfunction
Background: Dentigerous cyst is the most common type of developmental odontogenic cyst which originates from REE. It has the capacity for transformation to ameloblastoma, mucoepidermoid carcinoma and squamous cell carcinoma. ki-67 and PCNA are two cell proliferation markers which can be both detected in cysts and tumors of epithelial origin. ...