The diagnosis of emphysema.
D000397:Air Pollution; D001991:Bronchitis / Q000175:diagnosis; D002980:Climate; D003937:Diagnosis, Differential; D006801:Humans; D011656:Pulmonary Emphysema / Q000175:diagnosis* / Q000000981:diagnostic imaging; D011859:Radiography; D012129:Respiratory Function Tests; D012907:Smoking; D014692:Ventilation-Perfusion Ratio