If the tumor is large or has metastasized to lymph nodes, radical breast cancer surgery is required and the breast needs to be removed. 2. If the tumor is relatively small and the tumor is at a certain distance from the nipple, breast-conserving surgery can be done, or mastectomy can be done. However, before the surgery, the overall assessment of the patient’s condition should be very strict, and an MRI of the whole breast is usually needed to further determine whether there are micro-metastases inside the breast.