There is also a connection to low D3, so request labs for that. I had two checkups, six months apart and then will see the doctors and have tests again at one year. I have one ground glass nodule, but the rest are benign, and have not grown. I get yearly CT scans due to another condition, and my feeling is that they catch things that xrays do not, and possibly too early to treat. There is a good group on the lung diseases part of this site.