原发于乳腺的涎腺型肿瘤如腺样囊性癌,近年来国内外报告逐渐增多,而原发于乳腺的粘液表皮样癌却罕见,迄今世界文献仅报告三例。我院于1967～1985年在510例乳腺癌切片复习中,发现一例在组织形态上符合粘液表皮样癌的诊断标准,特报告如下: 女性,52岁,左乳房包块进行性增大 Primary parotid gland tumors such as adenoid cystic carcinoma that originate in the mammary gland have been reported at home and abroad in recent years, and mucoepidermoid carcinomas that originate in the breast are rare. So far only three cases have been reported in the world literature. In our review of 510 cases of breast cancer from 1967 to 1985, our hospital found a case that met the diagnostic criteria for mucoepidermoid carcinoma on the histology. The special report was as follows: Female, 52 years old, with progressive enlargement of left breast mass