Mine was Stage 1 adenocarcinoma and was 2.3 cm which is 23 mm! I had the surgery, they removed the bottom lobe of right lung and no nodes involved either. I am so blessed. But I will have to have CT scans (and boy do I have scanxiety) for the rest of my life - of course starting with 3 months, then graduate to 6 months and eventually (at about 3-4 years) go to one time a year......is that normal? Does anyone know? I was wanting scans a little more frequently until at least 3 years but my oncologist is bucking me.