I had a scan of my abdominal area, and what appeared to be a nodule in my lower left lung was found. It was thought that it could also be an image artifact. I came back a few months later to do a chest ct, just in case, and a large mass was found in my upper left lobe. It could not be seen in the earlier scan. The lower lobe structure turned out to be a benign nodule. The large mass was stage 1b cancer.
Don M