Breast lumps are graded four, divided into three subgrades, 4a, 4b, and 4c, with progressively increasing likelihood of malignancy. Breast node 4b is a breast tumor with a higher likelihood of malignancy. Breast nodule 4b has a 10-50% likelihood of being a malignant tumor and a 50-90% likelihood of being a benign tumor. If this situation generally need to actively cooperate with the doctor to do a puncture biopsy to clarify the diagnosis, or directly remove the swelling to do a biopsy to clarify the benign and malignant nature of the breast nodule. If the diagnosis is malignant tumor, the next step of treatment should be taken according to the specific situation, such as modified radical mastectomy, radiotherapy, chemotherapy and other comprehensive treatments. Therefore, once you find a breast nodule, you should consult a doctor in time to make a clear diagnosis.