title: Deep sulcus sign.
authors.affiliation: Department of Medical Imaging, National Taiwan University Hospital and National Taiwan University College of Medicine, Taipei, Taiwan.
authors.forename: Yao-Hui
authors.initials: YH
authors.lastname: Tseng
authors.forename: Kao-Lang
authors.initials: KL
authors.lastname: Liu
authors.forename: I-Lun
authors.initials: IL
authors.lastname: Shih
mesh_terms: D002637:Chest Pain / Q000000981:diagnostic imaging; D006801:Humans; D008297:Male; D011030:Pneumothorax / Q000000981:diagnostic imaging*; D013902:Radiography, Thoracic / Q000379:methods; D012008:Recurrence; D016683:Supine Position; D055815:Young Adult