UCSD Musculoskeletal Radiology

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Fleischner criteria

 

Fleischner Criteria - Incidental CT pulmonary nodule follow up criteria
 

 

 Nodule Size Low Risk Primary Low Risk Secondary High Risk Primary High Risk Secondary
Less than 4 mm  No follow up  No follow up  Follow up in 12 mo No follow up 
5 or 6 mm  Follow up in 12 mo No follow up  Follow up in 6 to 12 mo  Follow up in 18 - 24 mo 
7 or 8 mm  Follow up in 6 to 12 mo  Follow up in 18 - 24 mo  Follow up in 3 to 6 mo  Follow up in 9 to 12 mo 
Greater than 8 mm  Follow up at 3, 9, and 24 mo or dynamic CT, PET, and/or biopsy