When 70-year-old Grandpa Niu was taking a bath, he found a small pouch bulging on the outside of his right nipple, which was very hard to press. The next morning, Grandpa Niu and his son rushed to the Breast Surgery Clinic of Peking University People’s Hospital. After examinations such as breast ultrasound, breast MRI and hollow needle aspiration biopsy, the doctor finally confirmed that Grandpa Niu was suffering from right breast cancer, which had metastasized to the right axillary lymph node and needed to be hospitalized as soon as possible. Grandpa Niu’s son was very surprised, how could a man get a “woman’s disease” like “breast cancer”? Theoretically, breast cancer occurs due to cancer of breast cells, and men also have breast tissue, so breast cancer can also occur. However, due to the difference in physiological structure, women have higher levels of estrogen and progesterone than men, and most breast cancers are hormone-dependent, so women are more likely to develop breast cancer than men. However, many men think that their breasts are just two “little beans” on their chests that can be ignored, and since they cannot develop and grow like women’s breasts, it is only logical that they will not have as many problems. It is because of this mentality that male breast cancer patients seldom see the doctor early and timely, and because men’s breast tissue is weaker, cancer cells can easily spread around and invade the skin and muscle tissue of the breast in a short time, so most of them are already in the middle and late stages of the disease when they are diagnosed, and the treatment is not effective. Therefore, “breast cancer” is not a female “patent”, male breast cancer accounts for 1% of the total incidence rate and is more dangerous than female breast cancer. The age of onset of male breast cancer in China is about 10 years later than that of women, and it is concentrated between 50 and 70 years old, which may be related to the gradual atrophy of testicles and the decline of androgen secretion at this age, while most of the patients have an excess of estrogen in their bodies, and those who are obese and have male breast development are more prone to breast cancer. Excessive smoking and alcohol consumption also tend to lead to the development of breast cancer. Alcoholic hepatitis, fatty liver, viral hepatitis and other diseases that damage the metabolic function of the liver can reduce the liver’s ability to break down estrogen and increase the chance of breast cancer due to the accumulation of estrogen in the body. As with other cancer triggers, strong radiation is also an important one. When a man’s chest is exposed to a lot of radiation or his chest is exposed to ultraviolet light for a long time, it may trigger the development of breast cancer. Special emphasis is placed on the fact that if there are female breast cancer patients in the family, it is likely that male members of the bloodline will also have the genetic predisposition. So when what dangerous symptoms appear, male friends need to go to the hospital for further examination as soon as possible? 1. The discovery of breast lumps, especially those with hard texture, unclear borders, unsmooth surface and poor mobility, should raise your alertness. 2. Localized depression or orange peel of breast skin, nipple invagination, or nipple overflow, all of these indicate that breast cancer has invaded the skin and ligaments and need immediate medical attention. 3. A large percentage of swollen lymph nodes in the armpit are caused by breast cancer metastasis, so special care should be taken. The treatment for male breast cancer is the same as that for female breast cancer, including surgery, chemotherapy, radiotherapy, endocrine therapy, molecular targeted therapy, biological therapy and Chinese medicine treatment. As long as early detection, early diagnosis and early treatment, the treatment effect of male breast cancer will be significantly improved.