You don't say how the nodules were originally found - was it incidental to x-ray or CT for something else or were you having some lung illness or issue?

I assume your pulmonologist has your complete medical and family history, and is making this recommendation based on the total picture. Having a PET scan is the normal next step in this situation - I believe his setting up the other appointments is so that you can get their input. These are the people who can best evaluate the results of the scan and explain your options. It doesn't necessarily mean surgery and radiation are on your calendar...

I was very scared in September/October by a heart issue discovered when I had Covid. I quickly had a Contrast CT of my heart, which is the best diagnostic tool and it showed a blockage - off to the cardiologist, who I was sure would want to put in stents. Nope - he is good with trying medications first, and reevaluating every 6 months.

So thank your pulmonologist for being proactive, and having you scheduled with the experts as soon as possible after you get the PET scan results.

Good luck to you.