耳下腺上皮筋上皮癌例

抄録

A rare case of epithelial-myoepithelial carcinoma of the parotid gland in a 90-year-old woman is reported. The patient presented with a 7-year history of right-sided parotid gland swelling. Magnetic resonance imaging revealed a well-defined mass, measuring about 70 mm in diameter. The patient underwent parotidectomy with preservation of the facial nerves. The resected tumor showed characteristic histologic features: double-layered tubular structures composed of inner dark and outer clear cells. Although no additional treatment has been performed, the patient has remained free from recurrence for two years after the operation. The diagnosis and treatment of epithelial-myoepithelial carcinoma are discussed.