副耳下腺に生じた腺房細胞癌の1例 A case of acinic cell carcinoma arising in the accessory parotid gland
We describe a case of acinic cell carcinoma arising in the accessory parotid gland. The patient was a 61-year-old man who had been aware of a mass approximately 10mm in diameter in the right cheek since 1987, but left it untreated. The patient suddenly felt spontaneous pain of the cheek and was referred to our department. On the initial examination, a mass approximately 18mm in diameter was noted in the subcutaneous tissue just anterior to the right masseter muscle, and hard elastic distension with a clear boundary was palpated on the face. The oral mucosa was not affected; however, bloody saliva flowed from the parotid duct opening. CT detected a mass with homogenous contents and a clear boundary on the masseter muscle. The clinical diagnosis was a tumor of the right accessory parotid gland. The tumor was resected under general anesthesia. Since the tumor involved the parotid duct, the duct was resected and anastomosed. The histopathological diagnosis was acinic cell carcinoma. There has been no evidence of local recurrence or metastasis as of 30 months after operation.
日本口腔外科学会雑誌 51(11), 551-554, 2005-11-20
Japanese Society of Oral and Maxillofacial Surgeons