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. 2014 Nov 14;2014:1758–1767.

Table 1:

The BI-RADS assessment categories and their probabilistic interpretations.

BI-RADS Assessment Probability of Malignancy Description
0 N/A Additional Imaging Needed
1 0% No Abnormality
2 0% Benign Finding
3 < 2% Probably Benign Finding
4 2-95% Suspicious Abnormality
5 > 95% Highly Suggestive of Malignancy
6 100% Biopsy Proven