Myoepithelioma. Review of the literature and report of a case with ultrastructural confirmation.
The myoepithelioma is a rare salivary gland tumor composed nearly exclusively of myoepithelial cells. A case occurring on the palate of a 22-year-old man is reported. Electron microscopic findings of occasional desmosomes, a basal lamina associated with the plasma memb;rane, and perinuclear cytoplasmic filaments confirmed the diagnosis. The myoepithelioma appears to resemble the pleomorphic adenoma clinically and may be a development variant of the pleomorphic adenoma.
D008949:Adenoma, Pleomorphic / Q000648:ultrastructure; D000328:Adult; D003937:Diagnosis, Differential; D006801:Humans; D008297:Male; D009208:Myoepithelioma / Q000648:ultrastructure*; D009940:Organoids / Q000648:ultrastructure; D010157:Palatal Neoplasms / Q000648:ultrastructure*; D012468:Salivary Gland Neoplasms / Q000648:ultrastructure*