I know the risks of radiation, as I had it some years ago when I was first diagnosed. It does do some damage to the lungs, plus I also have copd. Also had wedge out of my right lower lobe and the middle lobe totally removed. And now its time to make decisions again. So between copd and the lung cancer........what is going to be my quality of life. Right now, I already live in assisted living. Also whats with the cpaps, guess I need to do some research.