scholarly journals Mucoepidermoid Carcinoma: A Demographic and Histopathological Profile

2020 ◽  
Vol 9 (4) ◽  
pp. 298-302
Author(s):  
Zainab Niazi
Keyword(s):  
Salivary Gland ◽  
Parotid Gland ◽  
Mucoepidermoid Carcinoma ◽  
Salivary Gland Tumors ◽  
Anatomical Site ◽  
Low Grade ◽  
High Grade ◽  
Male Patients ◽  
Histopathological Grading ◽  
Malignant Salivary Gland Tumors

Background: To find the frequency and clinico-pathological presentation of mucoepidermoid carcinoma (MEC).Materials and Methods:In this study, we included all the malignant salivary gland tumors. Among these the frequency of mucoepidermoid carcinoma was considered. Age, gender, histopathological grading and anatomical site of tumor were included in data analysis.Results:Out of 60 malignant salivary gland tumors reported to the histopathology department, 30 tumors were diagnosed as mucoepidermoid carcinomas. The patient’s age having mucoepidermoid carcinoma ranged from 6 to 88 years, mean age of 44.9±19.2SD. The male patients were 23 in number while female were 7. Out of 30 cases, 73.3% patients had tumor in parotid gland, while13.3% patients in submandibular gland . Other tumors were in palate, retromolar area, and in posterior 1/3rdof tongue (13.3%). According to histopathological grading 26.6% cases of MEC were of high grade, 26.6 % were intermediate grade and 36.6% were low grade.Conclusions:According to this study, the frequency of MEC was 50% among all salivary gland tumors. MEC was mostly found in parotid gland and histopathologically low grade type was the most common.

Immunohistochemical Expression of BCL-2 in Malignant Salivary Gland Tumors

2021 ◽  
Vol 10 (1) ◽  
pp. 329-336
Author(s):  
Faiz Rasul ◽  
Sultan Muhammad Wahid ◽  
Iman Imran ◽  
Zainab Rizvi ◽  
Rozina Jaffar ◽  
...  
Keyword(s):  
Salivary Gland ◽  
Salivary Gland Tumors ◽  
Low Grade ◽  
High Grade ◽  
Neoplastic Cells ◽  
Intermediate Grade ◽  
Tissue Sections ◽  
Hematoxylin And Eosin ◽  
Hematoxylin And Eosin Stain ◽  
Malignant Salivary Gland Tumors

Background: Malignant salivary gland tumors (MSGTs) consist of a heterogeneous group of neoplasms with complex clinicopathological features and biological behaviors. The purpose of this study was to determine the expression of Bcl-2 antiapoptotic protein in mucoepidermoid carcinoma (MEC), adenoid cystic carcinoma (ADCC), acinic cell carcinoma (ACC) and polymorphous low-grade adenocarcinoma (PLGA) of salivary glands and to find out its association with different grades of these tumors. Material and Methods: This descriptive study included 55 cases of MSGTs. Tissue sections were stained with routine hematoxylin and eosin stain as well as Bcl-2 immunostain. MSGTs were graded as low grade (Low grade MEC, ACC, PLGA, and tubular pattern of ADCC), intermediate grade (cribriform pattern of ADCC, and intermediate grade of MEC) and high grade (high grade of MEC and solid pattern of ADCC) tumors on H&E sections. Bcl-2 expression was scored as ‘negative’ (<5% of neoplastic cells), ‘1’ (5-19% of neoplastic cells), ‘2’ (20-49% of neoplastic cells), and ‘3’ (>50% of neoplastic cells), respectively. Results: MSGTs most commonly involved the parotid gland (52.7%), while ADCC (40%) and MEC (38.2%) were the most common tumors. Expression of Bcl-2 was strongly positive in 56.4% cases of MSGTs which included ADCC (71%), MEC (19.4%) and ACC (9.7%), respectively. A significant association was found between Bcl-2 staining and types of MSGTs i.e., MEC, ADCC, ACC (P = .001) as well as between Bcl-2 staining and grades of MSGTs (P = .013). Conclusions: Bcl-2 protein is expressed in malignant salivary gland tumors. Its expression maybe helpful in grading small biopsies, predicting behavior, and planning targeted therapy of MSGTs.    

scholarly journals Dedifferentiated Acinic Cell Carcinoma of the Parotid Gland With Myoepithelial Features

2002 ◽  
Vol 126 (9) ◽  
pp. 1104-1105 ◽  
Author(s):  
Simonetta Piana ◽  
Alberto Cavazza ◽  
Corrado Pedroni ◽  
Rosa Scotti ◽  
Luigi Serra ◽  
...  
Keyword(s):  
Salivary Gland ◽  
Parotid Gland ◽  
Cell Carcinoma ◽  
Clinical Course ◽  
Acinic Cell Carcinoma ◽  
Low Grade ◽  
High Grade ◽  
Epithelial Proliferation ◽  
Acinic Cell

Abstract Dedifferentiated acinic cell carcinoma of the salivary gland is an uncommon variant of acinic cell carcinoma, characterized by the coexistence of both an usual low-grade acinic cell carcinoma and a high-grade dedifferentiated component, as well as by an accelerated clinical course. We describe a case of acinic cell carcinoma of the parotid gland in a 67-year-old woman, which recurred 4 times after surgery and radiotherapy. The recurrences consisted of residual foci of acinic cell carcinoma intermingled with a high-grade epithelial proliferation; the latter was focally constituted by cells with morphologic and immunohistochemical features of myoepithelium.

The Myoepithelial Immunophenotype in 135 Benign and Malignant Salivary Gland Tumors Other Than Pleomorphic Adenoma

1999 ◽  
Vol 123 (9) ◽  
pp. 801-806 ◽  
Author(s):  
Anil R. Prasad ◽  
Adnan T. Savera ◽  
Allen M. Gown ◽  
Richard J. Zarbo
Keyword(s):  
Smooth Muscle ◽  
Salivary Gland ◽  
Salivary Gland Tumors ◽  
Low Grade ◽  
Salivary Duct ◽  
Not Otherwise Specified ◽  
Adenoid Cystic ◽  
Myoepithelial Differentiation ◽  
Specific Proteins ◽  
Malignant Salivary Gland Tumors

Abstract Background.—We have previously studied the immunoreactivity of 3 novel smooth muscle–specific proteins, α-smooth muscle actin, smooth muscle myosin heavy chains, and calponin, to assess myoepithelial differentiation in pleomorphic adenomas. Objective.—To further expand our knowledge of myoepithelial differentiation in other benign and malignant salivary gland tumors. Design.—Formalin-fixed paraffin sections of 135 salivary gland tumors with associated normal glands were stained with monoclonal antibodies using the avidin-biotin complex immunoperoxidase method and enzymatic and microwave heat–induced epitope retrieval. Results.—In adenoid cystic carcinomas and epithelial-myoepithelial carcinomas, all 3 markers exclusively highlighted the myoepithelial cell components and the epithelial cells were entirely negative. No immunostaining was detected in canalicular adenomas, oncocytomas, Warthin tumors, acinic cell carcinomas, mucoepidermoid carcinomas, squamous cell carcinomas, and polymorphous low-grade adenocarcinomas. Salivary duct carcinomas and adenocarcinomas, not otherwise specified had a distinctive pattern of uniform periductal staining of reactive myofibroblastic cells, and in salivary duct carcinomas some ducts retained a peripheral immunoreactive myoepithelial cell layer. Conclusion.—Immunoreactivity for these 3 smooth muscle–specific proteins confirms the known neoplastic myoepithelial component of adenoid cystic carcinomas and epithelial-myoepithelial carcinomas. The consistently positive staining pattern in adenoid cystic carcinomas may be diagnostically useful in discriminating histologically similar but consistently negative polymorphous low-grade adenocarcinomas. Periductal linear staining in adenocarcinoma, not otherwise specified and salivary duct carcinomas is distinctive and appears to represent a tight cuff of myofibroblasts associated with the infiltrating glands.

scholarly journals Pattern of distribution of different salivary gland tumors; a retrospective study in NICRH, Dhaka

2016 ◽  
Vol 15 (1) ◽  
pp. 95-98
Author(s):  
Afroza Khanam ◽  
Gulshan Akhter ◽  
Md. Abdur Rahman
Keyword(s):  
Salivary Gland ◽  
Retrospective Study ◽  
Parotid Gland ◽  
Minor Salivary Gland ◽  
Salivary Gland Tumor ◽  
Salivary Gland Tumors ◽  
Major Salivary Gland ◽  
Gland Tumor ◽  
Minor Salivary Gland Tumors ◽  
Malignant Salivary Gland Tumors

Background: Salivary gland tumors are rare, generally benign and affect both major and minor salivary glands.Objective: To find out the pattern of distribution of different benign and malignant salivary gland epithelial tumors and their relation to age and sex in a tertiary care center in Bangladesh.Methodology: This is a retrospective study. Details of epithelial salivary gland tumors were obtained from department of ENT, National institute of cancer & research hospital (NICRH), Dhaka, Bangladesh from the period January 2009 to December 2012 (3 years).Result: A total number of 261 cases presenting with both benign and malignant salivary gland tumors were analyzed according to gender, age and histopathological findings. There were 130 (49.84%) males and 131 (50.19%) females with the male female ration of 1: 0.99. Age of study population ranged from 10 to 70 years with the mean age 40.78. Percentage of benign salivary gland tumors was 73.94% and malignant salivary gland tumor 26.05%. Among major salivary gland tumors, no sublingual tumors were found and parotid gland tumors were the commonest. Whereas, among minor salivary gland tumors palatal minor salivary tumors were common.Conclusion: Parotid gland was the most common site of origin of both benign and malignant salivary gland tumors. Histopathologically, pleomorphic adenoma was the most common benign salivary gland tumor and mucoepidermoid carcinoma was the most frequent malignant neoplasm. Adenoid cystic carcinoma was common minor salivary gland tumor.Bangladesh Journal of Medical Science Vol.15(1) 2016 p.90-94

scholarly journals Histopathological spectrum and outcome of surgery for salivary gland tumors presented in tertiary care hospital of Pakistan.

2021 ◽  
Vol 28 (10) ◽  
pp. 1418-1421
Author(s):  
Ahmed Siddique Ammar ◽  
Rizwan Khalid ◽  
Syed Asghar Naqi ◽  
Shehrbano Khattak ◽  
Farwa Inayat ◽  
...  
Keyword(s):  
Salivary Gland ◽  
Parotid Gland ◽  
Pleomorphic Adenoma ◽  
Benign Tumor ◽  
Tertiary Care Hospital ◽  
Tertiary Care ◽  
Salivary Gland Tumors ◽  
Care Hospital ◽  
Outcome Of Surgery ◽  
Malignant Salivary Gland Tumors

Objective: This study is aimed to know the histopathological spectrum and outcome of surgery for salivary gland tumors presented in a tertiary care hospital of Pakistan. Study Design: Retrospective study. Setting: Tertiary Care Hospital of Pakistan. Period: July 2018 to June 2020. Material & Methods: After approval from Institutional Review Board. Total 73 patients were selected with preoperative diagnosis of salivary gland tumors with consecutive non probability sampling. All surgical procedures were done by specialist general surgeons who had experience of more than 10 years of head and neck surgery. Results: Male to female ratio was 2:1 with mean age of patients was 46 years. Among males 29 (59.1%) were benign salivary gland tumors while 20 (40.81%) were malignant salivary gland tumors. Among females 13 (54.16%) were benign and 11 (45.83%) were malignant salivary gland tumors Most common benign tumor was pleomorphic adenoma 32 (43.8%) while mucoepidermoid carcinoma was most common malignant tumor 17 (23.28%). Only 9 (12.32%) patients experienced nerve paresis. Conclusion: Male preponderance, a relatively younger age at presentation and single predominant benign tumor (pleomorphic adenoma) were the significant findings. Majority of them were found in parotid gland and found to be benign in nature. Majority of them were found in parotid gland and found to be benign in nature. Although fine needle aspiration cytology and magnetic resonance imaging provide some useful information about the nature of tumor but most of them will acquire a surgical excision in order to find the definitive diagnosis.

scholarly journals Current Concepts on Dedifferentiation/High-Grade Transformation in Salivary Gland Tumors

2011 ◽  
Vol 2011 ◽  
pp. 1-9 ◽  
Author(s):  
Ana Flávia Costa ◽  
Albina Altemani ◽  
Mario Hermsen
Keyword(s):  
Salivary Gland ◽  
Tp53 Gene ◽  
Salivary Gland Tumors ◽  
Low Grade ◽  
High Grade ◽  
Ki 67 ◽  
Histopathological Classification ◽  
Morphological Criteria ◽  
Salivary Gland Carcinomas ◽  
High Grade Transformation

The concept of dedifferentiation had previously been used in salivary gland carcinomas. Recently, the term “high-grade transformation” was introduced for adenoid cystic carcinoma, acinic cell carcinoma, epithelial-myoepithelial carcinoma, and polymorphous low-grade adenocarcinoma and may better reflect this phenomenon, although transformation into moderately differentiated adenocarcinoma (i.e., not “high grade”) has also been described. Among the immunohistochemical markers, Ki-67 seems to be the only one that can help distinguish between the conventional and transformed components; however, the combination of morphological criteria is still sovereign. The overexpression of p53 was observed in the transformed component in all tumor types studied, despite few cases having been demonstrated to carry mutations or deletions in TP53 gene. Genetic studies in salivary gland tumors with dedifferentiation/high-grade transformation are rare and deserve further investigation. This paper aims at providing an overview on the recent concepts in histopathological classification of salivary gland tumors, complemented by immunohistochemical and genetic findings.

scholarly journals Low Grade Central Mucoepidermoid Carcinoma

2015 ◽  
Vol 5 (1) ◽  
pp. 31-34
Author(s):  
Kartik Poonja ◽  
Janaki Subramanian Iyer ◽  
Leela Poonja
Keyword(s):  
Salivary Gland ◽  
Parotid Gland ◽  
Male Patient ◽  
Mucoepidermoid Carcinoma ◽  
Salivary Gland Tumor ◽  
Malignant Neoplasm ◽  
Low Grade ◽  
Gland Tumor ◽  
Malignant Salivary Gland Tumor ◽  
Central Mucoepidermoid Carcinoma

ABSTRACT Mucoepidermoid carcinoma (MEC) is the most common malignant salivary gland tumor, comprising about 15% of all salivary gland tumors and 30% of all salivary malignancies. Most of the MEC arise in the parotid gland. Rarely, it originates in the mandible and maxilla as an intraosseous variant, referred to as ‘central mucoepidermoid carcinoma’ or ‘intraosseous mucoepidermoid carcinoma’. Central mucoepidermoid carcinomas (CMECs) are extremely rare, but well-known entity, comprising 2 to 3% of all MECs reported. Histopathologically, this malignant neoplasm is characterized by mucous, intermediate and epidermoid cells. In this report, we present a case of a male patient diagnosed as low grade CMEC. How to cite this article Iyer JS, Poonja K, Pathak J, Patel S, Poonja L. Low Grade Central Mucoepidermoid Carcinoma. J Contemp Dent 2015;5(1):31-34.

scholarly journals Rare Development of Primary Parotid Gland Epithelial-Myoepithelial Carcinoma in a Child

2020 ◽  
Vol 2020 ◽  
pp. 1-5
Author(s):  
Daniyah Saleh ◽  
Doaa Al Ghamdi
Keyword(s):  
Salivary Gland ◽  
Lymph Node ◽  
Parotid Gland ◽  
English Literature ◽  
Salivary Gland Tumor ◽  
Salivary Gland Tumors ◽  
High Rate ◽  
Low Grade ◽  
Concomitant Treatment ◽  
Neck Lymph Node

Salivary gland tumors are uncommon in children. They consist of variable histopathological subtypes of benign and malignant tumors. EMC is a discrete entity among the WHO classification of salivary gland tumors since 1991. EMC is considered a low-grade malignant salivary gland tumor arising from intercalated ducts. Typically, it affects an adult female individual. Surgical resection with a negative margin is the mainstay treatment option. EMC has a potential for metastasis with a high rate of recurrence. Based on the available English literature, two cases of EMC diagnosed in a pediatric age group have been reported. Therefore, we describe the third EMC that developed in the left parotid gland of a young child. The diagnosis of EMC was established through histopathological examination of the total parotidectomy specimen and neck lymph node dissection, together with ancillary studies. Later, the patient suffered from cervical lymph node enlargement due to metastasis in which FNAB was taken. Metastasis from the known EMC was suspected with cytomorphological features in smears and cell block. Immunohistochemistry markers for the biphasic components were supportive of EMC. Due to advanced disease, the patient necessitated a concomitant treatment of radiochemotherapy. Besides, there was radiological evidence of bilateral multiple lung metastatic nodules. However, a biopsy was not sent for pathological confirmation.

Salivary gland tumours as second neoplasms: two cases and literature review

2009 ◽  
Vol 124 (5) ◽  
pp. 577-580 ◽  
Author(s):  
N Zidar ◽  
N Gale ◽  
A Župevc ◽  
M Žargi
Keyword(s):  
Salivary Gland ◽  
Parotid Gland ◽  
Salivary Glands ◽  
Mucoepidermoid Carcinoma ◽  
Case Reports ◽  
Malignant Neoplasms ◽  
Low Grade ◽  
Malignant Tumours ◽  
Second Neoplasms ◽  
Increased Risk

AbstractObjectives:Patients who survive malignant tumours have an increased risk of second neoplasms, including those of the salivary glands. Mucoepidermoid carcinoma of the parotid gland is by far the most common type of second salivary gland tumour; other types have rarely been reported. We describe here two patients with a second tumour of the salivary glands.Case reports:The first patient was a 22-year-old woman with a low grade mucoepidermoid carcinoma of the parotid gland, which developed 21 years after completion of chemoradiotherapy for acute lymphoblastic leukaemia. The second patient was a 40-year-old woman with an epithelial-myoepithelial carcinoma of the buccal mucosa, which arose 11 years after treatment for two malignant neoplasms – retroperitoneal liposarcoma and squamous cell carcinoma of the uterine cervix.Conclusions:It is mandatory that survivors of cancer should be monitored carefully, so that the complications related to their previous disease and therapy are detected early and managed properly.

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