耳下腺小細胞癌例

Abstract

There are many kind of malignant tumors in the parotid gland. Mucoepidermoid carcinoma, adenocarcinoma, adenoid cystic carcinoma are common. Small cell carcinoma in the parotid gland is a rare malignant tumor. However, there are two forms of small cell carcinoma that can affect this gland: Small cell ductal carcinoma and small cell neuroendocrine carcinoma. Here we report the latter type. A 54-year-old female consulted our hospital with a mass in the left anterior parotid gland region. The result of fine needle aspiration at the initial medical examination demonstrated class II. So we followed this tumor without surgical treatment. After 8 month's observation, extirpation of the tumor was performed. Pathological examination confirmed the diagnosis of small cell carcinoma. Immunohistochemical studies of the specimen confirmed a diagnosis of small cell neuroendocrine carcinoma because NSE was positive. Therefore, radiotherapy was performed post operatively. There has not been any evidence of recurrence since the last treatment.