Basal Cell Adenoma of the Parotid Gland: Case Report

Abstract

Objective: Basal cell adenomas are rare form of monomorfic adenomas of the parotid gland. This rare form of the tumors are mostly seen on suprafacial part of the parotid gland. Basal cell adenomas are well demarcated and asymptomatic tumors that can be treated by surgical removal. *Corresponding author: Demir MG, M.D., Yenisehir mah.Sena sok. dumankaya konsept sitesi 20.parsel, A2/6 kurtkoy, Pendik-Istanbul/Turkey, 34860, Fax: +902163520083, Tel: +902164413900, GSM: +90 5300403925, E-mail: mgokhandemir@yahoo.com Demir MG*1, Aydin S2 and Basak K3 Citation: Demir MG, Aydin S, Basak K (2014) Basal Cell Adenoma of the Parotid Gland: Case Report. SAJ Cas Rep 1(3): 301. doi: 10.18875/2375-7043.1.301 Volume 1 | Issue 3 Volume 1 | Issue 3 Case Report Open Access SAJ Case Reports www.scholarena.com Salivary gland tumors constitute only 2% to 6, 5% of all head and neck region tumors. Because of lots of types are defined, it is hard to diagnose the tumor definitely. Basal cell adenoma (BCA) is a rare neoplasm consisting of a monomorphic population of basaloid epithelial cells and accounts for 1-3% of all salivary gland tumors [1]. Most of these tumors are located on the parotid region. Also most of the parotid benign tumors are located on the superficial lobe. Introduction ISSN: 2375-7043 Case report: 48 years old female referred to our clinic with complaint of right sided asymptomatic preauricular swelling over 8 months. On the magnetic resonance examination on the right side of the parotid region, there was a contrast enhanced well demarcated, about 1,9x1,5 cm in size, round shaped mass lesion on T2 weighted view. Fine needle aspiration biopsy was not conclusive. Treatment and Prognosis: We planned superfacial parotidectomy but during surgery we recognize that the tumor was located on the deep lobe of the gland so performed partial parotidectomy for diagnosis and treatment. The pathologic investigation revealed basal cell adenoma. Recurrence was not detected in the 2 year follow up. Conclusion: Basal cell adenomas are rare form of parotid benign adenomas which can be misdiagnosed with malign tumors such as adenoid cystic carcinoma. The diagnosis with fine needle aspiration is difficult so when detected on physical examination on parotid region we should not insist on fine neddle aspiration biopsy to diagnosis. We represent basal cell adenoma of the parotid gland which was located on the deep lobe of the gland with unusual location The tumor was excised successfully without total parotidectomy. A 48 year-old female patient was admitted to our clinic, who suffered from asymptomatic right preauricular mass lesion for about 8 months. On the physical examination there was a palpable approximately 1x1 cm in size, well demarcated, painless, mobile mass located on anterior side of the tragus. According to the magnetic resonance image (MRI) examination on the right side of the parotid region, there was a contrast enhanced well demarcated, about 1,9x1,5 cm in size, round shaped mass lesion on T2 weighted view (Figure 1a,b). Case report Article history: Received: 14 October 2014 Accepted: 11 February 2015 Published: 13 February 2015