title: Spontaneous multiseptated cystic pneumomediastinum in a term newborn.
abstract: Pneumomediastinum usually occurs after assisted ventilation. Spontaneous pneumomediastinum without preceding assisted ventilation, and presenting as a huge cystic mass in a term newborn infant has rarely been reported. We report a term baby who developed respiratory distress at 2 days of age. A huge cystic tumor of the thymus or a congenital mediastinal cystic tumor was initially suggested by chest radiography and computed tomography. Follow-up chest film revealed a "spinnaker sail sign" which is a typical radiographic presentation of pneumomediastinum.
authors.affiliation: Department of Pediatrics, National Taiwan University Hospital and National Taiwan University College of Medicine, Taipei, Taiwan.
authors.forename: Cheng-Ting
authors.initials: CT
authors.lastname: Lee
authors.forename: Po-Nien
authors.initials: PN
authors.lastname: Tsao
authors.forename: Steven Shinn-Forng
authors.initials: SS
authors.lastname: Peng
authors.forename: Suh-Fang
authors.initials: SF
authors.lastname: Jeng
authors.forename: Hung-Chieh
authors.initials: HC
authors.lastname: Chou
authors.forename: Chien-Yi
authors.initials: CY
authors.lastname: Chen
authors.forename: Wu-Shiun
authors.initials: WS
authors.lastname: Hsieh
mesh_terms: D003560:Cysts / Q000000981:diagnostic imaging; D005260:Female; D006801:Humans; D007231:Infant, Newborn; D008478:Mediastinal Emphysema / Q000000981:diagnostic imaging*; D011859:Radiography