乳腺间质肉瘤非常少见，而男性乳腺间质肉瘤就更为罕见，我室遇到1例，现报告如下。1病历摘要患者男性，50岁，干部，病历号72727。患者于1973年发现左乳外上象限有一胡豆大包块，质硬、活动、不痛、不痒。两年前包快增长如鸡蛋．门诊细胞学穿刺诊断为“乳腺腺纤维瘤”．行单纯 Breast stromal sarcoma is very rare, while male breast stromal sarcoma is even rarer. We encountered 1 case in our department. The report is as follows. 1 medical records of patients male, 50 years old, cadres, medical record number 72727. The patient discovered in 1973 that there was a large mass of Hudou in the left quadrant of the left breast, which was hard, active, painless, and not itch. Two years ago the package grew rapidly like eggs. Outpatient cytology puncture diagnosed as “breast adenoma.” Simple