How is breast density classified on mammogram?

Updated: Oct 17, 2016
  • Author: Nagwa Dongola, MD, FRCR; Chief Editor: Peter Eby, MD  more...
  • Print
Answer

Breast density is strictly a mammographic finding. Density has no relationship to the physical exam. It represents the ratio of glandular tissue (white on a mammogram) to fat (dark on a mammogram). The radiologist evaluates the density and categorizes it into one of 4 categories according to the BI-RADS atlas: A, B, C or D. Category A represents a breast that is composed almost entirely of fat, and category D represents a breast that is composed almost entirely of glandular tissue.


Did this answer your question?
Additional feedback? (Optional)
Thank you for your feedback!