Breast imaging reporting and data system

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Mammograms - left: non-cancerous; right: cancerous. (WC/NIH)

Breast imaging reporting and data system, commonly known by the abbreviation BI-RADS, a standardized system for reporting breast radiology.

The abbreviation BI-RADS may also be written BIRADS.[1]

Score and management

It is characterized by:[2]

Score Meaning Typical management
BIRADS0 incomplete come back for more imaging
BIRADS1 negative
BIRADS2 benign finding(s)
BIRADS3 probably benign often short follow-up
BIRADS4 suspicious abnormality needs biopsy
BIRADS5 highly suggestive of malignancy biopsy to confirm impression
BIRADS6 pathologist says there is a malignancy excision

Subdivision of BIRADS4

BIRADS4 is can be subdivided into:[3]

Score Meaning Risk - based on Sanders et al.[4] PPV - based on Elverici et al.[5]
BIRADS4A suspicious abnormality - low risk 10% DCIS 19.5% (malignant)
BIRADS4B suspicious abnormality - intermediate risk 21% DCIS 41.5% (malignant)
BIRADS4C suspicious abnormality - high risk 70% DCIS 74.3% (malignant)

See also


  1. Dong, H.; Huang, Y.; Song, F.; Dai, H.; Liu, P.; Zhu, Y.; Wang, P.; Han, J. et al. (Aug 2017). "Improved Performance of Adjunctive Ultrasonography After Mammography Screening for Breast Cancer Among Chinese Females.". Clin Breast Cancer. doi:10.1016/j.clbc.2017.07.014. PMID 28887010.
  2. URL: Accessed on: 16 March 2011.
  3. URL: Accessed on: 15 September 2017.
  4. Sanders, MA.; Roland, L.; Sahoo, S.. "Clinical implications of subcategorizing BI-RADS 4 breast lesions associated with microcalcification: a radiology-pathology correlation study.". Breast J 16 (1): 28-31. doi:10.1111/j.1524-4741.2009.00863.x. PMID 19929890.
  5. Elverici, E.; Barça, AN.; Aktaş, H.; Özsoy, A.; Zengin, B.; Çavuşoğlu, M.; Araz, L.. "Nonpalpable BI-RADS 4 breast lesions: sonographic findings and pathology correlation.". Diagn Interv Radiol 21 (3): 189-94. doi:10.5152/dir.2014.14103. PMID 25835079.