一、疾病和药物因素:男性乳腺癌病人中,血浆催乳素含量增高,经研究发现,这些病人均有严重脑外伤或患有垂体催乳素腺瘤的病史,或经常应用过能促使催乳素升高的药如安定、利血平。高含量的催乳素会刺激乳腺细胞分裂和增殖、易发展为恶性。二睾丸因素:隐睾、睾丸损伤、萎缩和炎症可使体内激素水平发生异常改变,是致男性乳腺癌发病的危险因素。 First, the disease and drug factors: male patients with breast cancer, elevated plasma prolactin, the study found that these patients have severe traumatic brain injury or suffering from pituitary prolactin adenoma history, or often used to promote prolactin up High drugs such as stability, reserpine. High levels of prolactin will stimulate breast cell division and proliferation, easy to develop into malignant. Two testicular factors: cryptorchidism, testicular injury, atrophy and inflammation can make abnormal changes in hormone levels in the body, is a risk factor for the incidence of male breast cancer.