男性乳腺癌是一种罕见的疾病,其发病高峰在71岁。家族病例常有BRCA2基因突变而无BRCA1突变。职业风险因素包括高温环境和废气,而与电磁场没有关系。K linefelter综合征所导致的高雌性激素水平、性腺功能紊乱、肥胖、酗酒,同辐射一样都可增加致病风险,而男子女性型乳房则并不增 Male breast cancer is a rare disease with a peak incidence of 71 years. Family cases often have BRCA2 mutations without BRCA1 mutations. Occupational risk factors include high temperature and exhaust gases, but not electromagnetic fields. High levels of estrogen, gonadal dysfunction, obesity, alcoholism, caused by K linefelter syndrome, increase the risk of developing the same as radiation, whereas men’s female breasts do not increase