Perfect definition. The Docs explained it a "pre" emphysema for us. Said it progresses by reducing the amount of oxygen his lungs will absorb. If you'll permit me to digress and tell about a strange set of coincidences (it is a coffee shop afterall... ). The year was 1942 and my Dad was 18 years old. He was drafted by both the German army and the US army. Since he lived in the States he signed up with the US army and deployed to Germany. He started smoking, as probably all the soldiers did. His lungs probably didn't like smoking, as he came down with pneumonia in the cold, wet season, and this happened as his company was marching out to participate in The Battle of the Bulge. He was turned around about a mile outside of camp and sent to the infirmary. 7 days later he was released to go find his company, and they were all dead. So pneumonia saved his life (thank you very much). Ironically, the Docs said, it's probably what will take his life at the other end here. He's had pneumonia many times over his lifetime. He only smoked for 10 years, but it's likely the cause. Heck, I smoked for 10 years too, but fortunately no spots have shown up on my lungs that I know of so far. Dad's had a great life, and as he told me, "It's OK, I'm ready when it comes". Makes me sad, but at least he's at peace.