I am in Idaho so not near any Mayo clinics but I will travel if I don't feel I am getting good information. I will say I am lucky that the pulmonologist looked at a recent x-ray and compared it to one from 5 years ago and ordered the CT scan. He seems to be proactive in trying to help me. I am extremely committed to exercise. I was under weight during childhood and as a young adult and was sick often. I'm not even sure why but around 35 I started weight training and running and put on weight and noticed that I was sick less frequently. Within the last couple of years I have felt not quite right and have gotten the sense from my primary that since I am active there must not be anything wrong with me. I am so thankful for this site and all of you. It is nice to be able to communicate with people that are living with similar problems.