title: Case records of the Massachusetts General Hospital. Weekly clinicopathological exercises. Case 47-1979.
mesh_terms: D000192:Actinomycetales / Q000276:immunology*; D000328:Adult; D000389:Air Conditioning; D000391:Air Microbiology; D000542:Alveolitis, Extrinsic Allergic / Q000175:diagnosis* / Q000000981:diagnostic imaging / Q000209:etiology; D003937:Diagnosis, Differential; D006801:Humans; D008168:Lung / Q000000981:diagnostic imaging; D008297:Male; D011233:Precipitin Tests; D011859:Radiography