The BI-RADS classification of breast hypoechoic nodules at grade 3 is considered to be more likely to be benign breast tumors. The BI-RADS classification is a standard for preliminary grading of benign and malignant breast tumors through breast imaging. If the nodules have smooth edges, good mobility and slow growth, you can first follow up with ultrasound for a period of time, and review the ultrasound once every three to six months, and when there are obvious abnormalities, do a puncture biopsy or choose minimally invasive breast surgery. Let the doctor evaluate the tumor situation and then treat the tumor symptomatically.