What should I do if I develop lung nodules after moving to Thailand?

Unfortunately, the lung nodules showed up in both lungs on a CT calcium score at Pattaya Bangkok Hospital after only being in Thailand for two months and then a couple of months later on at PET\CT scan at Bangkok hospital through an oncologist at Samitivej Sukhumvit. They did not mention other potential causes like PM2.5 or sarcoidosis or tuberculosis and didn't want to test for those. I was wondering if many expats have lung nodules show up on scans.