Lung nodules are not necessarily unusual findings, particularly as you get older. I had one of those low dose CT whole body scans about 6 months before I was diagnosed with my SCC, and it showed a few small nodules. CT scans at 6, 12 and 24 months were done to insure no growth, and then I was discharged from the pulmonologist. They did not grow, and in a couple of cases disappeared. The never lit up on PET.

As a general rule (numerous exceptions of course), but the existence of multiple nodules at one time is more indicative of old inflammatory residue than of malignancy, particularly when you are monitored regularly. Pulmonology would not be doing their job if they did not follow up, but I would not stress over it.