We did discuss the scan with my oncologist. He and the oncology fellow who reviewed the scan after the radiologist are sort of unconcerned. That is, they'll look at our next scan (April? not set yet) and compare to see how things stand. But right now, they're not too worried, and we're not doing anything about the opacity. They both asked whether I'd had a cold or viral infection; apparently those can cause ground glass opacity on scans. The only thing I could think of is that I had an RSV vaccination just after Thanksgiving, which would have been about two weeks before the CT. But I can't find anything online about any connection between Arexvy and the CT image. And that's not a live vaccine anyway. My CA 19-9 number remains in normal range, which is reassuring, since it suggests that the cancer activity has definitely slowed. Oh yeah, I also mentioned that I likely had covid back in 2020; it's not official on my records, but every MD who looks at my chart says, "Yep, covid." But no previous scans showed the ground glass opacity, so odds are it isn't from covid.

I'll scoot over to the link you provided and see what I can glean from it. Thanks for the help!