Breast nodule is not a clinical diagnosis, it is just an abnormal finding on imaging, and its severity depends on the grading of the breast nodule, that is, the BI-RADS grading. When the grading is less than or equal to grade 3, the lump is a low risk, that is, the possibility of malignancy is less than 2%, while greater than or equal to grade 4 is malignant, in this case, it is necessary to carry out a puncture biopsy as soon as possible, or excisional biopsy to clarify the nature of the nodule, for nodules less than or equal to grade 3, do not forget to carry out a close observation and follow-up, and review the ultrasound once every three months to six months. If you are suffering from breast nodules, you should also pay attention to your diet and avoid eating foods or drugs that may contain estrogen and progesterone.