Fleisher criteria for imaging of solitary pulmonary nodule; Fleischner Society guidelines

Radiology

solitary pulmonary nodule < 1 cm

• < 4 mm
  • low risk: no follow-up
  • high risk:
    • follow-up CT at 12 months*
    • if unchanged, no further follow-up*
• 4-6 mm
  • low risk:
    • follow-up CT at 12 months
    • if unchanged, no further follow-up
  • high risk:
    • follow-up CT at 6-12 months, then at 18-24 months*
• 6-8 mm
  • low risk:
    • follow-up CT at 6-12 months, then at 18-24 months
  • high risk:
    • follow-up CT at 3-6 months, then at 9-12 months, then at 24 months
• 8-10 mm (high or low risk)
  • follow-up CT at 3, 9 & 24 months
  • dynamic contrast-enhanced CT, PET &/or biopsy

* ground glass or semisolid nodules may require longer follow-up to rule-out indolent lung adenocarcinoma

More general terms

• criteria

Additional terms

• solitary pulmonary nodule; pulmonary coin lesion