title: Compression of the Right Ventricular Outflow Tract due to Straight Back Syndrome Clarified by Low-dose Dual-source Computed Tomography.
abstract: A 23-year-old asymptomatic woman was referred to our hospital for further examination of a systolic ejection murmur with fixed splitting of the second heart sound auscultated at the third left sternal border. Initial echocardiography could not detect the cause. Subsequently performed low-dose computed tomography, however, ruled out the possibility of any congenital heart diseases, but revealed a markedly shortened anteroposterior diameter of the chest, which led us to a diagnosis of straight back syndrome. A vertically oriented "pancake" appearance of the heart, straight vertebral column, and compression of the right ventricular outflow tract were clearly demonstrated on the reconstructed images.
authors.affiliation: Division of Cardiovascular Medicine, Department of Internal Medicine, Kobe University Graduate School of Medicine, Japan.
authors.forename: Kohei
authors.initials: K
authors.lastname: Hasegawa
authors.forename: Tomofumi
authors.initials: T
authors.lastname: Takaya
authors.forename: Shumpei
authors.initials: S
authors.lastname: Mori
authors.forename: Tatsuro
authors.initials: T
authors.lastname: Ito
authors.forename: Sei
authors.initials: S
authors.lastname: Fujiwara
authors.forename: Tatsuya
authors.initials: T
authors.lastname: Nishii
authors.forename: Atsushi
authors.initials: A
authors.lastname: K Kono
authors.forename: Hiroyuki
authors.initials: H
authors.lastname: Shimoura
authors.forename: Hidekazu
authors.initials: H
authors.lastname: Tanaka
authors.forename: Ken-Ichi
authors.initials: KI
authors.lastname: Hirata
mesh_terms: D004452:Echocardiography; D005260:Female; D006321:Heart / Q000000981:diagnostic imaging*; D006801:Humans; D007091:Image Processing, Computer-Assisted; D013577:Syndrome; D013904:Thoracic Vertebrae / Q000002:abnormalities* / Q000000981:diagnostic imaging*; D014057:Tomography, X-Ray Computed; D014694:Ventricular Outflow Obstruction / Q000000981:diagnostic imaging*; D055815:Young Adult