Differential diagnosis and treatment of mioepithelioma and pleomorphic adenoma

Abstract

Introduction: The neoplasms of salivary gland constitute a group of lesions clinically and morphologically different, which are able to determine important challenges in diagnostic and therapeutic. To report two cases of benign tumors of the minor salivary glands, adenoma and myoepithelioma. Also, discussing the differential diagnosis and its treatment in comparison with literature information. Case report: Two female patients, with similar ages, both complained about the appearance of an asymptomatic lesion on the palate after using a poorly adapted prosthesis. On the clinical characteristics of the lesions, the hypothetical diagnosis was of minor salivary gland tumor and pleomorphic adenoma, respectively. In the absence of signs of malignancy, the proposed treatment was excisional biopsy with enucleation and curettage. The histopathology diagnosis was begin tumor of minorsalivary glands (myoepithelioma plasmacytoid), and pleomorphic adenoma, respectively. The enucleation and curettage were effective and there were no signs of recurrence. Final considerations: Both the adenoma and myoepithelioma are clinically similar and the differential diagnosis is performed by the histopathology exam, but conservative treatment such as enucleation and curettage can be applied to both.