I am a former smoker. But the reason for the scans is that I took the drug Chantix (my lot number was one recalled as Pfizer accidentally doubled the ingredients in several lots). I began with a severe unrelenting cough, thus my primary sent me to a pulmonologist first. I passed his VQ scan thus he ordered my first lung CT 3 years ago which first showed multiple cysts throughout my upper lobes. He placed me on steroids and several inhalers which improved my symptoms. I felt so much better that I told my primary that I no longer needed to see a lung doctor. He agreed but said I needed yearly scans done. My second scan, 2 years ago showed no further cysts. The one I had done 2 weeks ago show ground glass opacities, left lingular and LLL and RML atelectasis. Still no cough, SOB or related symptoms