Emphysema: types, most important feature of each

 "Cigarette Is Primary Problem":
· Types:
Centrilobular
Irregular
Pancinar
Paraseptal
· Most important feature for each type (in order as above):
Cigarrettes
Inflammation healed to scar
Protease inhibitor deficiency (a1-antitrypsin)
Pneumothorax
· "Cigarette is primary problem" used since cigarettes are the most common cause of emphysema.