35 and above, solid nodule, single nodule, 6-8mm, low risk, <6 months.

ACR Fleischner Society recommendations (MacMahon, et al. Radiology 2017; 284(1): 228-43) suggest the following: Follow-up chest CT at 6-12 months. If unchanged, no further follow-up or an optional chest CT at 18-24 months if there is high index of suspicion.