title: Spontaneous pneumomediastinum.
authors.affiliation: Department of Emergency and Critical Care Medicine, JR General Hospital, Shibuya-ku, Japan Department of Emergency and Critical Care Medicine, The University of Tokyo, Bunkyo-ku, Japan.
authors.forename: Kei
authors.initials: K
authors.lastname: Kira
authors.affiliation: Department of Emergency and Critical Care Medicine, JR General Hospital, Shibuya-ku, Japan Department of Emergency and Critical Care Medicine, The University of Tokyo, Bunkyo-ku, Japan.
authors.forename: Ryota
authors.initials: R
authors.lastname: Inokuchi
authors.affiliation: Department of Emergency and Critical Care Medicine, JR General Hospital, Shibuya-ku, Japan Department of Emergency and Critical Care Medicine, The University of Tokyo, Bunkyo-ku, Japan.
authors.forename: Hiromu
authors.initials: H
authors.lastname: Maehara
authors.affiliation: Department of Emergency and Critical Care Medicine, JR General Hospital, Shibuya-ku, Japan Department of Emergency and Critical Care Medicine, The University of Tokyo, Bunkyo-ku, Japan.
authors.forename: Shunsuke
authors.initials: S
authors.lastname: Tagami
mesh_terms: D000328:Adult; D002637:Chest Pain / Q000175:diagnosis / Q000000981:diagnostic imaging / Q000209:etiology; D006801:Humans; D008297:Male; D008478:Mediastinal Emphysema / Q000175:diagnosis* / Q000000981:diagnostic imaging; D019547:Neck Pain / Q000175:diagnosis / Q000000981:diagnostic imaging / Q000209:etiology; D035583:Rare Diseases; D014057:Tomography, X-Ray Computed / Q000379:methods; D014463:Ultrasonography / Q000379:methods