BI-RADS: Breast Imaging Reporting and Data System, was developed by the American College of Radiology (ACR) to standardize mammogram reporting, as well as breast ultrasound and MRI reporting.
The standard mammogram report includes the following
BI-RADS 0 : Incomplete
BI-RADS 1: Negative (Essentially 0% chance of malignancy)
BI-RADS 2: Benign (Essentially 0% likelihood of malignancy)
BI-RADS 3: Probably benign (> 0% but ≤ 2% likelihood of malignancy)
BI-RADS 4: Suspicious (> 2% but < 95% likelihood of malignancy)
BI-RADS 5: Highly suggestive of malignancy (95% likelihood of malignancy)
BI-RADS 6: Known, biopsy proven malignancy
ACOG Practice Bulletin No 164. Diagnosis and Management of Benign Breast Disorders
ACR BI-RADS® Atlas, Breast Imaging Reporting and Data System
ACOG Committee Opinion 625: Management of with Dense Breasts Diagnosed with Mammography
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