title: The collar sign.
authors.affiliation: Department of Respiratory Medicine, BYL Nair Ch Hospital, Mumbai Central, Maharashtra, 400 008 India.
authors.forename: K B
authors.initials: KB
authors.lastname: Agrawal
authors.forename: R T
authors.initials: RT
authors.lastname: Kamble
authors.forename: P
authors.initials: P
authors.lastname: Sundaram
authors.forename: J M
authors.initials: JM
authors.lastname: Joshi
mesh_terms: D000328:Adult; D006549:Hernia, Diaphragmatic, Traumatic / Q000000981:diagnostic imaging*; D006801:Humans; D008297:Male; D014057:Tomography, X-Ray Computed; D014949:Wounds, Nonpenetrating / Q000000981:diagnostic imaging*