title: Educational case.
authors.affiliation: Professor of Respiratory Medicine, University of Copenhagen, Gentofte Hospital, DK-2900 Hellerup, Denmark. ADi@dadlnet.dk
authors.forename: Asger
authors.initials: A
authors.lastname: Dirksen
mesh_terms: D000368:Aged; D004417:Dyspnea / Q000175:diagnosis / Q000209:etiology; D004452:Echocardiography; D005260:Female; D006801:Humans; D010092:Oximetry; D005082:Physical Exertion; D011653:Pulmonary Diffusing Capacity; D011656:Pulmonary Emphysema / Q000175:diagnosis* / Q000503:physiopathology; D013902:Radiography, Thoracic; D012129:Respiratory Function Tests; D014057:Tomography, X-Ray Computed / Q000379:methods