BI-RADS5 category is highly suspected of malignancy in the breast, with specific abnormal signs on ultrasound or mammography, which should be diagnosed clearly as soon as possible and treated aggressively. BI-RADS refers to Breast Imaging Reporting and Data System, which is a grading and evaluation standard commonly used in breast ultrasound and mammogram diagnosis at present, and is mainly used to determine whether the structure of the breast is normal or not, whether there are benign or malignant lesions, and the probability of malignant lesions, and it is usually divided into grades 0-5, and the higher the grade usually suggests that the more abnormal the breast lesions are. BI-RADS category 5 refers to a high suspicion of breast malignancy, and imaging often shows abnormal signs such as irregular lumps, burr sign, abundant blood flow, and thin strips of calcified foci. In this case, breast biopsy surgery should be performed as soon as possible to clarify the pathology, and then combined with the pathological diagnosis, condition and other comprehensive treatment. Warm reminder:When the examination result is BI-RADS5 category, you should go to the hospital as soon as possible, under the guidance of the doctor for treatment, so as not to delay the condition.