Capricious behavior of pulmonary bullae developing fluid.
D000368:Aged; D001768:Blister; D005122:Exudates and Transudates; D006801:Humans; D008168:Lung / Q000473:pathology; D008171:Lung Diseases / Q000209:etiology*; D008297:Male; D008875:Middle Aged; D011656:Pulmonary Emphysema / Q000150:complications* / Q000000981:diagnostic imaging; D011859:Radiography