Emphysema
Emphysema is a long-term, progressive disease of the lung(s) and occurs when the alveolar walls are destroyed along with the capillary blood vessels that run within them. This lessens the total area within the lung where blood and air can come together, limiting the potential for oxygen and carbon dioxide transfer.
MedicineNet.com
COPD International
U.S. National Library of Medicine: MedLine Plus
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