男性乳腺癌较为罕见,其发病率在男性人群中约为(0·85~1·30)/100000[1],在所有乳腺癌病例数中1%,在所有男性癌症病例数中亦不足1%[2]。最近20年内,男性乳腺癌的发病率有增高的趋势[3]。在美国,每年新诊断的男性乳腺癌约为1600例,每年约有400例病人因其死亡,男性乳腺癌仍具有 Male breast cancer is rare, with a prevalence of approximately (0.85-1.30) per 100 000 men in the male population, 1% of all breast cancer cases and less than 1 in all men with cancer %[2]. In the recent 20 years, the incidence of male breast cancer has increased [3]. In the United States, about 1,600 new cases of male breast cancer are diagnosed each year, and about 400 patients die each year. Male breast cancer still has