Epithelial-myoepithelial cell carcinoma of the parotid gland: a case report and comparison of cytologic features with other stromal, epithelial, and myoepithelial cell containing lesions of the salivary glands.

The salivary glands are the site of many neoplasms characterized by a mixture of epithelial and myoepithelial cells and stomal fragments. Cytologic distinction of these neoplasms may be very difficult but careful attention to cellular details and the interaction between the cells and stroma can correctly classify these neoplasms as monomorphic or pleomorphic adenomas, adenoid cystic carcinomas, or epithelial-myoepithelial cell carcinomas.