I have read is usually an easy thing to check out and treat...
I understand your fears tho. Almost ten years ago as I was in the process of being diagnosed with hypothyroid, I'd had the sono done, and a nodule was found. They did a 'needle aspiration', basically a biopsy, and it was determined to be a non-issue. I do admit tho, for the first 2 years after my onset, I was always asking my docs: IS it my thyroid? And the answer has consistently been NO. Tests were easy and relatively painless.

I've had pneumonia three times in my life and have had distinct scarring show up on my films and scans from that. It's good that your docs are being super cautious tho, as it sure beats a 'not to worry' and then do nothing attitude.

Soo about your lungs, do you remember ever having a really bad cold, flu or pneumonia in the past?

It's better to have the tests, and then have them come up negative! That's the news I'll be waiting to hear from you!

Sending heaps of good thoughts your way to help you thru it all - j