BI-RADS Class 6 means breast lesions that have been pathologically examined and determined to be malignant but have not been treated, such as breast cancer and breast sarcoma. The BI-RADS classification is used in all types of breast imaging to determine the degree of benignity or malignancy of a breast lesion. This grading method categorizes breast lesions into grades from 0 to 6. In general, the higher the grade, the greater the degree of malignancy. grade 6 refers to lesions that have been biopsy-proven to be malignant but have not been treated and should be treated aggressively. When the test result is BI-RADS 6 class, it is recommended to visit the breast surgery department in time, according to the professional doctor’s opinion to determine whether there is a possibility of radical treatment, to determine the next step of the treatment plan, specifically surgery, radiotherapy, chemotherapy and other modalities.