I had a bad cough three months ago, then a CT scan that showed something. Follow-up CT scan showed that whatever it was had decreased in size. I am to have another CT follow-up in a few weeks (three months after initial one). The cough has gone away, but now I am worried about a localized pain in my chest. It is on the right side, fairly high and corresponds in area to a spot on my back that is always knotted. The CT scan said the area of conern was on the left side. But I am continuing to worry about lung cancer with this moderate localized pain.