Nodule diameter and volume | Recommended action |
---|---|
Fleischner guideline [1] | |
<6 mm or 100 mm3 | No routine follow-up if considered low risk or optional CT at 12 months if considered high risk (based on all relevant risk factors |
6–8mm or 100–250mm3 | Surveillance with CT |
>8 mm and 250 mm3 | CT, PET/CT or tissue sampling |
British Thoracic Society guideline [2] | |
<5 mm or 80 mm3 | Discharge |
5−8 mm or 80−300 mm3 | Surveillance with CT |
>8 mm and 300 mm3 | Assess using Brock model and surveillance with CT if risk <10% or PET-CT if risk ≥10% |