Can breast be hit cancer?

Breast cancer does not occur after a bump. The risk factors for breast cancer are complex and may be related to a variety of factors, including genetics, hormones, reproduction, nutrition, and the environment. High estrogen levels after menopause, estrogen replacement therapy, short menstrual cycles, early menarche, and late cessation of menstruation can increase the risk of breast cancer. Reproductive factors such as late childbearing, infertility, and non-breastfeeding also significantly affect breast cancer. The main symptoms of breast cancer are breast mass, nipple discharge, skin changes, nipple abnormalities, axillary lymph node enlargement, etc. Treatment methods include surgery, chemotherapy, radiotherapy, targeted therapy.