People at high risk for breast cancer Women who have a hereditary family history of breast cancer development in a family member, such as a mother, sister or daughter with a history of breast cancer, have a higher than normal chance of developing breast cancer. Those who are found to have BRCA gene mutation through genetic testing have a higher incidence than those who do not have the mutation. Genetic testing is more common in western developed countries, but remains controversial in academic circles. The possibility of developing a tumor can be obtained with testing, but invasive surgery for this uncertainty is still not understood by many patients and doctors. Gan Cheng, Department of Plastic Surgery, Chinese Academy of Medical Sciences Preventive mastectomy and immediate breast reconstruction surgery The procedure consists of the following steps: 1. Small incision mastectomy, usually an inframammary fold incision or areolar incision, is used to ensure complete excision of breast tissue and to protect the breast skin tissue. 2. 2. One stage placement of breast implants, or one stage soft tissue expander, and two stage placement of breast implants of appropriate size. The procedure is concealed and the appearance of the breast changes very little after the surgery, making it difficult for onlookers to notice. For cases such as breast sagging, if the right surgery and implants are chosen, there is even some improvement to the shape.