Bullous emphysema causes

In the case of bullous emphysema, the air sacs become overinflated and cystic, putting excess strain on normal lung tissue and blocking oxygen from reaching the bloodstream. The air sacs often become inflamed and can even rupture, which severely limits lung functioning. Doctors and medical researchers have identified smoking, sarcoidosis, and genetic tendencies as the most common causes of bullous emphysema. Exposure to airborne pathogens, bronchitis, and chronic obstructive pulmonary disease can also contribute to the development of the condition.

Source: BullousEmphysema.org
Last update: 2011-11-03