Table 1.

BIRADS system for reporting mammography results

Category	Diagnosis	Description; Recommended Action	Probability of Malignancy
6	Known Biopsy Proven Malignancy	Lesions known to be malignant that are being imaged prior to definitive treatment; assure that treatment is completed	N/A
5	Highly Suspicious of Malignancy	Lesion that has a high probability of being malignant; take appropriate action	≥ 95%
4	Suspicious Abnormality	Not characteristic of breast cancer, but reasonable probability of being malignant; biopsy should be considered	3 to 94%
3	Probably Benign	Findings that have a high probability of being benign six-month short interval follow-up	<2%
2	Benign	A definite benign finding; routine screening recommended
1	Negative	There is nothing to comment on; routine screening recommended
0	Incomplete	Your mammogram or ultrasound didn’t give the radiologist enough information to make a clear diagnosis; follow-up imaging is necessary