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Table 1 Abridged guideline recommendations following detection of incidentally detected lung nodules

From: Development and validation of clinical prediction models to risk stratify patients presenting with small pulmonary nodules: a research protocol

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%