Breast category 3 nodules have a high likelihood of being benign and a low rate of malignancy, and most benign nodules can be cured by conservative treatment and surgery. Breast nodules of category 3 refers to the high possibility of benign, malignant rate is 0~2%. most of the breast nodules of category 3 are caused by benign breast diseases, and the possibility of malignant tumors, such as breast cancer, is very low. 1. Benign nodules: such as acute mastitis can take penicillin anti-infection treatment, abscess incision drainage cure, plasma cell mastitis, breast cysts, fibroids, etc. can be cured by surgical excision of the lesion. Some early breast cancers can also be cured by radical surgery, radiotherapy, endocrine therapy, targeted therapy and other comprehensive treatments. Some benign breast diseases, such as breast hyperplasia, are difficult to be cured, and usually only require symptomatic treatment such as tamoxifen and massage to relieve symptoms, which usually will not affect the survival. 2. Malignant nodules: malignant nodules usually refer to breast cancer, which requires comprehensive treatment such as surgery, chemotherapy, radiotherapy and endocrine therapy. The 3 types of breast nodules are mostly caused by benign breast diseases, which are less likely to be breast cancer, so patients are advised to consult the doctor in time and follow the doctor’s instructions for treatment.