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====Pathologic classification==== | ====Pathologic classification==== | ||
Based on morphology:<ref name=Ref_PCPBoD8_368>{{Ref PCPBoD8|368}}</ref> | Based on morphology:<ref name=Ref_PCPBoD8_368>{{Ref PCPBoD8|368}}</ref> | ||
#Centriacinar (centrilobular) - associated with heavy smoking. | #Centriacinar (centrilobular) emphysema - associated with heavy smoking. | ||
#Panacinar (panlobular) - associated with alpha-1 antitrypsin deficiency. | #Panacinar (panlobular) emphysema - associated with alpha-1 antitrypsin deficiency. | ||
#Distal (paraseptal) acinar - associated with spontaneous pneumothorax. | #Distal (paraseptal) acinar emphysema - associated with spontaneous pneumothorax. | ||
#Irregular - usu. insignificant. | #Irregular emphysema - usu. insignificant. | ||
*Q. Why does smoking lead to centriacinar emphysema? | *Q. Why does smoking lead to centriacinar emphysema? |
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