"As long as there are female breast cancer patients in the family, the related male members of this family may also have genetic genes." Although this conclusion has not been confirmed by epidemiological investigation, Song Santai, director of the Cancer Center of the Affiliated Hospital of the Academy of Military Medical Sciences, still stressed that men with a family history of breast cancer should pay attention to breast changes. If you find a breast lump, you should go to a specialized hospital in time to avoid misdiagnosis. Generally speaking, estrogen in women is transformed from androgen secreted by adrenal cortex. Aromatase inhibitors can prevent this transformation and treat breast cancer. Therefore, when men suffer from breast cancer, they should not only remove their breasts like women, but also remove their testicles sometimes to reduce the secretion of androgen. After operation, aromatase inhibitors were used to block the conversion of androgen secreted by adrenal cortex into estrogen. In addition, men have flat breasts and less breast tissue than women. Even if only a 2~3cm tumor grows, it may attach to and infiltrate the surrounding skin, muscles and chest wall in a short time. In addition, men generally don't pay much attention to their breasts, so compared with women, many male patients are already in the advanced stage once they are diagnosed with cancer. Experts remind that men, like women, can prevent breast cancer by touching. Once you find a male breast protruding, or feel an abnormal lump in your breast, you must go to the hospital for examination to avoid delaying diagnosis and treatment.