I was diagnosed thyroid cancer 5/2023. CT scans were taken which showed that there were also other problems: multible ground glass opacities in my lungs. They biobsied the largest nodule in my left upper lung (20mm) and found atypical cells. Segmentectomy was done 8/2023 which confirmed it was adenocarcinoma in situ. No other treatments were considered necessary. After 3 months I had CT and PET scan and there were no new GGO:s and the existing 4 had not grown (largest 12mm right upper lung). I’ve had 3 scans after operation with no change and the next one is 12/25. That is a big relief, however, after reading all your experiences, I’ve come to realise that 3 years followup recommended by my doctor is not enough. Thanks to the informative articles referred in your posts I’ve learn that if my precancer is MAC I need to have my nodules checked annually much longer than that. It’s good to know that Mayo Clinic is having a study going on and is releasing an article next fall on MAC. Thank you all for sharing your stories!