BI-RADSŪ classification BI-RADSŪ 1 = Negative BI-RADSŪ 2 = Benign findings BI-RADSŪ 3 = Probably benign findings BI-RADSŪ 4 = Suspicious abnormality BI-RADSŪ 5 = Highly suggestive of malignancy | Statistical reality of the BI-RADSŪ scores The probability for BI-RADSŪ lesions 3 to be malignant is less than 2% high The probability for BI-RADSŪ lesions 4 to be malignant is between 2 and 94% high The probability for BI-RADSŪ lesions 5 to be malignant is more than 94% high | |
