Mammography BI-RADS Structured Read — free guideline decision tool

Enter mammography findings and get a suggested BI-RADS v2025 (6th edition) category by 'most suspicious feature decides the category'. Instant, browser-side.

Most suspicious feature drives the level: spiculated mass or fine-linear branching calcifications (segmental/linear) or suspicious feature + retraction → 4C–5; suspicious calcifications, microlobulated/indistinct margin, irregular/high-density mass, developing asymmetry, distortion → 4; circumscribed mass / focal asymmetry → 3; benign calcifications / fat-containing mass → 2.

Structured assistance in assigning a mammography BI-RADS category from descriptors.

BI-RADS has no official scoring — the category is set by the most suspicious feature. Associated features (skin/nipple retraction) can upgrade a suspicious finding to 5. v2025 splits category 0 into 'needs additional imaging' and 'needs prior comparison'. The final category must integrate bilateral comparison, prior films and clinical context.

For licensed clinicians and clinical researchers. Interpret results with history, investigations and local protocols; not a diagnosis or prescription, and not a substitute for multidisciplinary decision-making or local guidelines.

Inputs: Mass margin No mass, Mass shape/density Not applicable (no mass), Calcification morphology No calcifications, Calcification distribution Not applicable (no calcifications), Asymmetry None, Architectural distortion None, Suspicious associated features (skin/nipple retraction, skin thickening, axillary adenopathy) None → Result: Suggested category BI-RADS 1（Suggested category: BI-RADS 1: Negative, Deciding feature: No abnormal feature entered (negative), Management: No abnormal finding: routine screening） Inputs: Mass margin Spiculated, Mass shape/density Fat-containing (lipoma/hamartoma/oil cyst), Calcification morphology Fine linear / fine-linear branching, Calcification distribution Segmental, Asymmetry Developing asymmetry, Architectural distortion Present, Suspicious associated features (skin/nipple retraction, skin thickening, axillary adenopathy) Present → Result: Suggested category BI-RADS 5（Suggested category: BI-RADS 5: Highly suggestive of malignancy (≥ 95%), Deciding feature: most suspicious feature → suspicious feature + skin/nipple retraction or similar associated feature (also: spiculated mass, fine linear / branching calcifications, fine-linear branching + segmental/linear distribution, developing asymmetry, architectural distortion, with skin/nipple retraction etc. → upgraded to 5), Management: Biopsy/management; a benign pathology discordant with imaging still needs surgical consultation）