Pulmonology visit

Two years post-lung cancer surgery, I finally made it to the pulmonologist's office. The reason was to figure out why I still have a cough even though the CAT scans and the Xray look stable for cancer. What isn't so stable is that the August Xray indicated possible COPD. My grandmother also had COPD and neither one of us smoked or were around the stuff. I hoped for a genetic test to see if that was a concern since some of my reading on the net suggested that it may be that. I was worried before that the doctor would say no. He never blinked and insisted that I have that test right away.Now I'm somewhat uneasy that he said yes! In fact, he looked at March CAT scan on his desk computer and agreed that the xray that indicated possible COPD and emphysema was right on the mark. He put me on Advair twice a day to reduce the lung inflamation and plans a pulmonary test later next month as well as the genetic test. Is COPD common with just a lung cancer diagnosis? Or am I about to add another major incurable disease(emphysema)to the breast cancer and lung cancer diagnoses I already have? I'm not depressed about it. It is what it is and I know that there are benefits to knowing stuff, even the stuff. But learning about another major illness is a bit overwhelming! Thanks for letting me vent.

C. Abbott