Particular clinical and morphological aspects in a case of parotid basal cell adenoma

The basal cell adenoma (BCA) is a rare tumor entity of the salivary glands. It represents an adenoma monomorphic form, first mentioned by Kleinasser and Klein in 1967. (13) The most frequent location is at the level of the parotid gland. It presents itself usually as a tumorous firm mass, mobile, with slow increase. Microscopically, the tumour contains monomorphic basal cells with the absence of myoepithelial cells. Histologically, it is characterised by the presence of hilar stroma presence, soft, and with the absence of the myxoid or chondroid stroma. It presents similarities with the mixed tumour, but also with the adenocarcinoma with basal cells and with the cystic adenoid carcinoma. Therefore, questions may arise regarding the diagnostic and treatment. It tends to be multifocal and the rate of relapse after the surgical excision is high. Taking into consideration all these aspects, in this paper we would want to show a case of adenoma with basal cells with parotid localization which presented a series of clinical-morphological particularities in parallels with the data existing in the specialized literature.