Dear friends, please , do not confuse between BI-RADS 4 breast imaging category and stage IV of cancer BI-RADS is NOT a stage of cancer; it is a BI-RADS category (Breast Imaging-Reporting and Data System), indicating a suspicious finding during breasts' imaging (mammography, ultrasonography), those require a biopsy to determine if cancer is present. Unlike cancer stages (stages I, II, III, or IV), those describe the extent of cancer, that has already been diagnosed and confir