This makes all the CT scans over the years worth the time, effort, expense, and X-ray exposure. After seeing a small (10 mm) nodule in my lower right lung sit there for years with no change, this year it had doubled in size (volume, not diameter) since last year. Off to the pulmonologist; off for a PET scan with radioactive tracer injection. The results have come back and the pulmonologist "doesn't like the looks of it". He won't say it is cancer, but he thinks it should be removed. I have an e-visit coming up (via Zoom) to discuss my options with someone from the surgery department.
Note that I am a four-time cancer survivor from things caught very early: two melanomas (a couple decades apart), and two kidney cancers (caught in scans looking for tobacco-related cancers). The first kidney cancer required an invasive operation. (I joked that they had tipped the kidney out through the 10" (26 cm) incision to work on it and stuffed it back in afterwards.) The second was done by RF ablation. (They stuck a tiny microwave oven in on the end of a skinny probe and burned it away in place.)
If we decide to go ahead with this surgery, it will be more like the second. They will make two small incisions and put a camera in
through one, and a combination nipper and vacuum cleaner in through the other. He said that frequently the patient (me) will go home the same day. I expect that I will say to proceed.