scholarly journals An Unusual Hybrid Salivary Gland Tumor: Molecular Analysis Informs the Potential Pathogenesis of This Rare Neoplasm

2019 ◽  
Vol 2019 ◽  
pp. 1-6
Author(s):  
Yan Zhou ◽  
Ernesto Martinez Duarte ◽  
David J. Eleff ◽  
Laura J. Tafe ◽  
Jason M. Leibowitz ◽  
...  

Background. The presence of two or more tumor entities growing in adjacent locations within the salivary gland is very rare, and pathologic studies on such lesions are limited, particularly those with molecular information. Since the clinical history and imaging studies are usually nonspecific, accurate diagnosis and clinical management largely depend on a thorough histological examination. Methods and Results. We describe a 71-year-old man with an unusual case of hybrid salivary gland tumor composed of mucoepidermoid carcinoma and basal cell adenoma. Molecular analysis revealed differing driver genetic alterations in each component. Conclusions. Hybrid salivary gland tumors are rare, and their pathogenesis is controversial. The combination of mucoepidermoid carcinoma and basal cell adenoma has not been previously described. While malignant transformation of adenoma to carcinoma seems plausible, gene sequencing was more suggestive of their independent derivation. Key to appropriate surgical management is identifying the more aggressive component, ideally at the time of intraoperative consultation.

2021 ◽  
pp. 014556132110455
Author(s):  
Nouha Ben Abdeljelil ◽  
Mohamed Masmoudi ◽  
Wadii Thabet ◽  
Ahlem Bellalah ◽  
Ezer Chebil ◽  
...  

Basal cell adenoma (BCA) is a rare benign salivary gland tumor accounting for only 1–2% of all salivary gland tumors. We report a case of a 50-year-old man presenting a BCA of the parotid gland. A pleomorphic adenoma was initially suspected based on radiological features and fine needle aspiration cytology findings (FNAC).


e-CliniC ◽  
2016 ◽  
Vol 4 (1) ◽  
Author(s):  
Wirawan Iman ◽  
Marselus Merung ◽  
Ainun Aschorijanto

Abstract: Salivary glands tumours are relatively rare to find. There is still no adequate data about the incidence of salivary gland tumours in Indonesia. The main objective of this research was to cognise the profile of salivary glands tumours patients in Prof. Dr. R.D. Kandou Central General Hospital Manado from July 2012 to June 2015. Methods used is descriptive retrospective. The results showed there are 37 patients with salivary gland(s) tumour(s). Male was 59,5% and female was 40,5%. By age groups found that <19 years for 2.7%, 19-30 years for 8,2%, 31-45 years for 21.6%, 46-60 years for 37,8%, >60 years for 29,7%. Based on the histopathological classification, pleomorphic adenoma for 56.8%, Whartin's tumor for 8.1%, myoepithelioma for 2,7%, basal cell adenoma for 2.7%, oncocytoma for 2.7%, cystadenoma for 5.4%, canalicular adenoma for 2.7%, mucoepidermoid carcinoma for 10.8%, adenocarcinoma for 5.4%, and acinic cell carcinoma for 2.7%. Based on the location of the tumours’ appearance, parotid gland for 83.8%, submandibular gland for 13.5%, minor salivary glands for 2.7%. Based by the incidences annually, first year for 21.6%, second year for 32.3%, and the third year for 46.1%.Conclusion: Males are more than females, most commonly found in the age group of 51-60 years, the most commonly benign tumour found is the pleomorphic adenoma, the most commonly found malign tumour is mucoepidermoid carcinoma, the most commonly location of the tumours’ appearance is the parotid gland. The salivary glands tumours continued to increase during the last three years.Suggestion: Still necessary to do further research about salivary glands tumours.Keywords: salivary glands tumours, age, gender, histopathology, location, profileAbstrak : Tumor kelenjar liur adalah tumor yang relatif sedikit dijumpai ditemukan. Belum ditemukan data yang lengkap tentang kejadian tumor kelenjar liur di Indonesia. Tujuan utama dari penelitian ini adalah untuk mengetahui profil penderita tumor kelenjar liur di RSUP Prof. Dr. R.D. Kandou Manado periode Juli 2012-Juni 2015. Metode penelitian yang digunakan adalah deskriptif retrospektif. Hasil penelitian memperlihatkan terdapat 37 penderita tumor kelenjar liur. Laki-laki sebanyak 59,5% dan perempuan 40,5%. Kelompok usia <16 tahun sebanyak 2,7%, 16-30 tahun sebanyak 8,1%, 31-45 tahun sebanyak 21,6%, 46-60 tahun sebanyak 37,8%, >60 tahun sebanyak 29,7%. Berdasarkan klasifikasi histopatologi jenis pleomorphic adenoma sebanyak 56,8%, Whartin’s tumor sebanyak 8,2%, myoepithelioma sebanyak 2,7%, basal cell adenoma sebanyak 2,7%, oncocytoma sebanyak 2,7%, cystadenoma sebanyak 5,4%, canalicular adenoma sebanyak 2,7%, mucoepidermoid carcinoma sebanyak 10,8%, adenocarcinoma sebanyak 5,4%, acinic cell carcinoma sebanyak 2,7%. Berdasarkan lokasi munculnya tumor, kelenjar parotis sebanyak 83,8%, kelenjar submandibula sebanyak 13,5%, kelenjar liur minor sebanyak 2,7%. Berdasarkan jumlah pertahunnya, tahun pertama sebanyak 21,6%, tahun kedua sebanyak 32,3%, dan tahun ketiga sebanyak 46,1%.Kesimpulan : Penderita laki-laki lebih banyak daripada perempuan, paling banyak ditemukan pada kelompok usia 46-60 tahun, tumor jinak yang paling banyak ditemukan adalah pleomorphic adenoma, tumor ganas yang paling banyak ditemukan adalah mucoepidermoid carcinoma, lokasi tersering munculnya tumor adalah kelenjar parotis. Penderita tumor kelenjar liur terus meningkat selama tiga tahun terakhir.Saran : Perlu dilakukan penelitian lebih lanjut tentang tumor kelenjar liurKata Kunci : tumor kelenjar liur, usia, jenis kelamin, histopatologi, lokasi, profil


2014 ◽  
Vol 2014 ◽  
pp. 1-4 ◽  
Author(s):  
Masanori Kudoh ◽  
Hiroyuki Harada ◽  
Yuriko Sato ◽  
Ken Omura ◽  
Yoshimasa Ishii

Basal cell adenoma is a rare type of benign salivary gland tumor found most commonly in the parotid gland. We present a rare case of basal cell adenoma arising in the minor salivary gland of the upper lip. The patient was a 59-year-old Japanese man who visited our department in December 2012 with a chief complaint of a mass in the upper lip, which had increased in size over several years. A mobile, elastic, and relatively soft mass without tenderness was palpable in the upper lip region. The mucosa of the upper lip covering the mass was normal. Tumor extirpation was performed under local anesthesia. Histologically, the tumor had a capsule and was composed of islands of relatively uniform, monotonous cells. Immunohistochemically, the inner tumor comprised tubuloductal structures that showed strong staining for CK7, while the outer tumor showed weak staining for CK7. The outer tumor cells also stained positively for CD10 and p63. The MIB-1 (Ki-67) labeling index was extremely low. Basal cell adenoma was diagnosed based on these results. The postoperative course was uneventful 12 months after surgery and there has been no recurrence.


2015 ◽  
Vol 5 (3) ◽  
pp. 184-187
Author(s):  
Pratik Dipak Shah ◽  
Srijon Mukherji

ABSTRACT Basal cell adenoma (BCA) is a significantly rare benign salivary gland neoplasm that includes isomorphic basaloid cells. Presence of myoepithelial cell is a characteristic of this tumor. Basal cell adenoma accounts for only 1 to 2% of all salivary gland epithelial tumors. The goal of the paper is to report a rare case of tubular type of BCA arising from parotid gland and discuss its management. How to cite this article Shah PD, Mukherji S. Tubular Type of Basal Cell Adenoma of Parotid Gland: A Rare Entity. J Contemp Dent 2015;5(3):184-187.


2008 ◽  
Vol 02 (03) ◽  
pp. 213-216 ◽  
Author(s):  
Eliana Maria Minicucci ◽  
Eloisa Bueno Pires de Eloisa ◽  
Silke Anna Thereza Weber ◽  
Maria Aparecida Custodio Domingues ◽  
Daniel Araki Ribeiro

ABSTRACTBasal cell adenoma is an uncommon benign salivary gland neoplasm, presenting isomorphic basaloid cells witha prominent basal cell layer. Taking into account that basal cell adenomas represent 1% of all salivary gland tumors, being the majority of cases in the parotid glands, the goal of this paper is to report a case of basalcell adenoma of the upper lip arising from minor salivary gland. (Eur J Dent 2008;2:213-216)


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