🫁 Pulmonary Nodule Lung-RADS v2022 Category
Compute the Lung-RADS v2022 category from nodule type and size at baseline screening, with follow-up management. Instant, browser-side.
Pulmonary Nodule Lung-RADS v2022 Category
Nodule type
Total nodule diameter (mm)
Solid component diameter (if part-solid) (mm)
When to use
Classify a nodule on low-dose CT lung-cancer screening and set the follow-up.
How it works
Solid: < 6 → 2, 6–< 8 → 3, 8–< 15 → 4A, ≥ 15 → 4B. Part-solid scored by solid component (< 6 → 3, 6–< 8 → 4A, ≥ 8 → 4B). Pure ground-glass: < 30 → 2, ≥ 30 → 3.
Key points
- For screening only — use Fleischner for incidental non-screening nodules.
- Additional suspicious features (spiculation, bubbly lucency, adenopathy) upgrade to 4X.
- New or growing nodules use lower thresholds (growth ≥ 1.5 mm).
- 4A → 3-month LDCT (add PET/CT if solid component ≥ 8 mm); 4B → diagnostic CT/PET/sampling.
References
Decision support for licensed clinicians only; not a substitute for clinical judgement, diagnosis or local protocols.