Breast Imaging Reporting and Data System v2025: Key Updates in MRI

The American College of Radiology Breast Imaging Reporting and Data System (BI-RADS^®) provides a standardized lexicon and reporting framework for breast MRI interpretation. The recently released BI-RADS^® v2025 introduces refinements to breast MRI reporting, focusing primarily on clarification, standardization, and structural reorganization rather than fundamental changes to diagnostic principles. Key updates include more structured guidance on MRI acquisition and reporting; harmonization and removal of selected descriptors; incorporation of T2 signal intensity into mass characterization; reorganization of lymph node evaluation into a dedicated section; and clarification of associated features, such as peritumoral edema. Additionally, the updated Manual provides refined guidance for MRI assessment within a more structured clinical indication framework. This article provides an overview of the key updates introduced in BI-RADS^® v2025 for breast MRI.