title: Luftsichel sign.
authors.affiliation: Department of Radiology, St Johns Medical College and Hospital, Bangalore, Karnataka, India.
authors.forename: Sankar
authors.identifier: http://orcid.org/0000-0003-1555-6055
authors.initials: S
authors.lastname: Neelakantan
authors.affiliation: Department of Radiology, St Johns Medical College and Hospital, Bangalore, Karnataka, India.
authors.forename: Rakesh
authors.initials: R
authors.lastname: Anandarajan
authors.affiliation: Department of Radiology, St Johns Medical College and Hospital, Bangalore, Karnataka, India.
authors.forename: Anil Kumar
authors.initials: AK
authors.lastname: Swamy
authors.affiliation: Department of Radiology, St Johns Medical College and Hospital, Bangalore, Karnataka, India.
authors.forename: Ravi
authors.initials: R
authors.lastname: Hoisala
mesh_terms: D003371:Cough / Q000000981:diagnostic imaging / Q000209:etiology; D006469:Hemoptysis / Q000000981:diagnostic imaging / Q000209:etiology; D006801:Humans; D008168:Lung / Q000000981:diagnostic imaging*; D008171:Lung Diseases / Q000000981:diagnostic imaging*; D008297:Male; D008875:Middle Aged; D061330:Multidetector Computed Tomography; D001261:Pulmonary Atelectasis / Q000000981:diagnostic imaging