Any tumor is genetically related and has a genetic predisposition. Breast cancer usually means that the patient has a lump or tumor in the breast, which may lead to lymph node metastasis or bloodstream metastasis, etc. Surgery is usually sufficient. After surgery, other treatment methods will be used depending on the results of other tests. Breast cancer is not a hereditary disease and is not hereditary and will not lead to breast cancer in the patient’s niece or others. Female patients should go to the hospital for regular physical examinations or self-examinations. If a lump or mass is found in the breast of the patient’s niece, she needs to go to the hospital for timely examination. Breast cancer can exist in anyone, including men and women, and the lump is highly suspected to be malignant at the time of ultrasonography or mammography, and surgery needs to be considered. Breast cancer is hereditary and her niece has a higher risk of developing cancer than other people without a family history of tumor, but it is not necessarily inherited to her niece.