RadFollow
Sign in
Guideline Current Fleischner Society 2017

Fleischner Society 2017 Guidelines for Management of Incidentally Detected Pulmonary Nodules

Size- and morphology-based follow-up recommendations for incidentally detected pulmonary nodules in adults ≥35 years, excluding lung cancer screening and immunocompromised or oncologic patients.

Updated Jul 5, 2026
Applies to
  • Adults ≥ 35 years
  • Incidentally detected pulmonary nodules on CT
  • Solid and subsolid nodules
Classification
  • Risk group Low-risk
  • Risk group High-risk
Exclusions
  • Patients < 35 years
  • Lung cancer screening (use Lung-RADS)
  • Known primary or metastatic malignancy
  • Immunocompromised patients
Interactive

Decision tree

Enter a finding to compute a recommendation without leaving the page.

Recommendation builder

Choose nodule type and patient risk. Multiplicity is informational; the engine matches by nodule type and size.

Evidence

References

  1. PrimaryMacMahon H, Naidich DP, Goo JM, et al. Guidelines for Management of Incidental Pulmonary Nodules Detected on CT Images: From the Fleischner Society 2017. Radiology. 2017;284(1):228-243.
FAQ

Frequently asked

Does this guideline apply to oncology patients?

No — patients with known malignancy fall outside the scope unless the guideline states otherwise. Follow oncologic surveillance protocols instead.