BIRADS BREAST CLASSIFICATION
0 incomplete additional imaging evaluation needed 1 negative 2 benign likelihood of malignancy ~0%. Routine screening recommended 3 probably benign 0-2% likelihood of malignancy. Follow-up in ~6 months 4 suspicious likelihood of malignancy 2-95% 5 highly suspicious >95% risk of malignancy. Requires tissue diagnosis 6 proven malignancy biopsy positive. Surgical excision recommended