title: Luftsichel sign upperlobe collapse.
authors.forename: David
authors.initials: D
authors.lastname: Isbell
authors.forename: Daniel
authors.initials: D
authors.lastname: Grinnan
authors.forename: Manesh R
authors.initials: MR
authors.lastname: Patel
mesh_terms: D000368:Aged; D018287:Carcinoma, Large Cell / Q000150:complications / Q000473:pathology; D006801:Humans; D008113:Liver Neoplasms / Q000150:complications / Q000473:pathology; D008297:Male; D011030:Pneumothorax / Q000150:complications / Q000000981:diagnostic imaging*; D011859:Radiography