Parotid gland myoepitheliomas. Differential diagnosis with pleomorphic adenoma
Palomar Asenjo, V.; Borràs Perera, M.; Soteras Ollé, J.; Palomar García, V.
Anales Otorrinolaringologicos Ibero-Americanos 33(4): 409-416
2006
ISSN/ISBN: 0303-8874 PMID: 16910397 Document Number: 602400
Myoepitheliomas are rare benign tumours of head and neck. The parotid gland is the most common site of origin. It consists on proliferation of myoepithelial cells and it shows some features similar to preomorphic adenoma although the ductal elements are very low. Diagnosis requires histology and immunohistochemistry because fine needle aspiration often shows erroneous results. Limited parotidectomy is the choice treatment. We report two cases of parotid gland myoepithelioma confirmed by immunohistochemistry.