Plasmacytoid myoepithelioma of the palate: case report

Abstract

Myoepitheliomas are extremely rare benign neoplasms of salivary glands. They represent 1-1.5% of all salivary gland tumors. They occur, principally, in the parotid gland and infrequently in minor salivary glands. There are distinct histological and immunohistochemical characteristics of the tumor which aid in the diagnosis. Myoepithelioma of the palate is uncommon and only a limited number of cases has been reported in the English literature. Herein, a case of plasmacytoid type of myoepithelioma of the palate in an adult female is presented along with review of the literature.

Fig. 1

Clinical appearance of the lesion

Fig. 2

Sheets of neoplastic cells (HE×100)

Fig. 3

The plasmacytoid cells (HE400)

Fig. 4

Positive immunoreactivity against vimentin (×200)

Fig. 5

Positive immunoreactivity against S-100 protein (×100)

Fig. 6

Positive immunoreactivity against cytokeratin AE1/AE3 (×200)

Fig. 7

Positive immunoreactivity against calponin (×100)