title: Rapidly progressing diffuse pulmonary infiltrate.
mesh_terms: D000328:Adult; D018288:Carcinoma, Small Cell / Q000000981:diagnostic imaging*; D006801:Humans; D008175:Lung Neoplasms / Q000000981:diagnostic imaging*; D008297:Male; D009361:Neoplasm Invasiveness; D011859:Radiography