I've been going to a pulmonologist for three years now who requests 2 CT scans every six months and has a wait and see attitude. I'm getting to where I don't want repeated scans because that doesn't sound healthy, but I don't want to take a heavy course of antibiotics either. I eat well and exercise so this condition doesn't affect my life at this point but my concern is waiting until it does when something might have been done to prevent a worsened condition. Thoughts?