An interactive ACR BI-RADS US categorization tool. Pick lexicon descriptors for a breast lesion and see the resulting BI-RADS category, likelihood of malignancy, and management recommendation update in real time — with the rationale for every verdict.
Rationale will appear here once you begin selecting features.
Single-select unless noted. Click the ⓘ on any descriptor for teaching pearls. Click Reference beside a group to see a real-world US example.
Click a case to load its BI-RADS descriptors into the tool and see how the category computes. Cases span benign → highly suggestive.
© 2026 SonoAtlas · BreastSim™ v1.0 · BI-RADS Edition · Educational use only · Not for clinical diagnosis