What is Breast Imaging Reporting and Data System (BI RADS)?
The Breast Imaging Reporting and Data System (BI-RADS) lexicon was developed by the American College of Radiology (ACR) to provide a clear, concise way to report mammographic results. A BI-RADS category is reported at the end of every mammogram report and summarizes the findings of the mammogram.
BI RADS Lexicon
|1||Normal mammogram. The patient should return in 1 year for annual mammography.|
|2||Benign finding on mammogram. The patient should return in 1 year for annual mammography.|
|3||There is a high likelihood of benignity (>98%). A short-term follow-up is recommended in 6 months. The follow-up is performed over a total of 2-3 years.|
|4||A biopsy is warranted: >2% but <95% likelihood of malignancy.|
|4a||Low likelihood of malignancy.|
|4b||Intermediate likelihood of malignancy.|
|4c||Moderate likelihood of malignancy.|
|5||A biopsy is recommended. There is a high likelihood of malignancy (≥95%).|
|0||The imaging evaluation is incomplete. Additional evaluation or prior studies are needed for comparison.|