Breast MR Imaging

The latest edition of the Breast Imaging Reporting and Data Systems lexicon, copyrighted in 2013, contains several changes to the breast MR imaging section. Most changes were implemented to standardize descriptors across breast imaging modalities. New sections on special topics and implant evaluation are included. We review basic MR imaging breast anatomy and a detailed pictorial review of the Breast Imaging Reporting and Data Systems lexicon, including these new sections. In each section we discuss which descriptors are more concerning for malignancy and information radiologists can use to better categorize findings as lower risk or benign.