Term Name:	emphysema
Synonyms:
Definition:	Abnormal accumulation of air in the interstitial connective tissue of a structure. Sensu Lung: Pulmonary emphysema; characterised by abnormal increase in the size of air (alveolar) spaces distal to the terminal bronchiole with degenerative changes in their walls and reduction in their number.
Ontology:	MPATH [MPATH:31]