Basal Cell Adenoma: A rare case report with immunohistochemical analysis

Basal cell adenoma (BCA) of the salivary gland is a rare benign monomorphic adenoma accounting for approximately 1–2% of all salivary gland tumors. It is characterized by the presence of sheets/nests of monomorphic cells with a prominent basement membrane. An absence of myxoid and chondroid stroma separates it from the pleomorphic adenoma. Participation of myoepithelial cells is still a controversial issue in the histogenesis of this tumor. We are presenting a case of BCA of the parotid gland in an elderly male patient. A panel of immunohistochemical markers is used to confirm its benignity and emphasize its use to differentiate it from other common histological entities. We briefly review the literature and discuss the differential diagnosis of this rare entity

Multilocular Unicystic Ameloblastoma of Mandible

Introduction. We report a rare case of unicystic ameloblastoma (UA) of mandible which showed multilocular radiolucency on the left side of mandible on radiographic examination which is very unusual, and the majority of the cases of UAs till date has been reported of unilocular radiolucency. On histopathological examination, an odontogenic cystic lining that proliferates that intraluminally resembling ameloblastomatous epithelium was observed, leading to a definitive diagnosis of unicystic ameloblastoma. Case Presentation. A 42-year-old male patient presented with a swelling on the left side of the mandible extending from 33 to 36. Radiographically, it showed a multilocular radiolucent lesion resembling odontogenic cyst; however, the final diagnosis was made on histopathological ground with the inclusion of radiological and clinical features. Conclusion. It can be concluded that at present, histopathologic examination is the most sensitive tool for differentiating between odontogenic cysts and UAs. However, both clinical and radiologic findings share equal contribution to the final diagnosis