BI-RADS

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BI-RADS is an acronym for Breast Imaging-Reporting and Data System, a quality assurance tool originally designed for use with mammography. The system is a collborative effort of many health groups but is published and trademarked by the American College of Radiology (ACR).

The system is designed to standardize reporting. The document focuses on patient reports used by medical professionals, not "lay reports" that are provided to patients.

Published Documents

The BI-RADS is published by ACR in the form of the BI-RADS Atlas. As of 2007 the Atlas is divided into 3 publications:

• Mammography, Fourth Edition
• Ultrasound, First Edition
• MRI, First Edition

Assessment Categories

While BI-RADS is a quality control system, in day-to-day usage the term "BI-RADS" refers to the mammography assessment categories. These are standized numerical codes typically assigned by a radiologist after interpreting a mammogram. This allows for concise and unambigious understanding of patient records between mulitiple doctors and medical facilities.

The assessment categories were developed for mammography and later adapted for the MRI and Ultrasound Atlases. The summary of each category, given below, is identical for all 3 modalities.

Category 6 was added in the 4th edition of the Mammography Atlas.

BI-RADS Assessment Categories are^[1]:

• 0: Incomplete
• 1: Negative
• 2: Benign finding(s)
• 3: Probably benign
• 4: Suspicious abnormality
• 5: Highly suggestive of malignancy
• 6: Known biopsy – proven malignancy

Breast Composition Categories

• 1: Almost entirely fat
• 2: Scattered fibroglandular densities
• 3: Heterogeneously dense
• 4: Extremely dense

External links

• The American College of Radiology
• BI-RADS Atlas
• Short tutorial, with actual mammogram pictures

References

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Acknowledgement and Attribution Regarding Sources of Content

Some of the initial content on this page may be incorporated in part from copyleft sources in the public domain including wikis such as Wikipedia and AskDrWiki. Drug information for patients came from the The National Library of Medicine. Infectious disease information may have come from the Centers for Disease Control (CDC). Differential Diagnoses are drawn from clinicians as well as an amalgamation of 3 sources: 1.The Disease Database; 2. Kahan, Scott, Smith, Ellen G. In A Page: Signs and Symptoms. Malden, Massachusetts: Blackwell Publishing, 2004:3; 3. Sailer, Christian, Wasner, Susanne. Differential Diagnosis Pocket. Hermosa Beach, CA: Borm Bruckmeir Publishing LLC, 2002:7 .