title: Diagnostic dilemma: left aortic arch with right descending aorta--a rare vascular ring.
abstract: An infant had a rare type of vascular ring comprising a left aortic arch, a retroesophageal transverse aorta, a right descending aorta, and a right ligamentum arteriosum. Noninvasive studies including echocardiography with Doppler color flow mapping and magnetic resonance imaging were diagnostic of a vascular ring. However, only angiography prospectively established the exact type of ring. This report discusses the pitfalls of noninvasive studies used to diagnose unusual arch anomalies.
authors.affiliation: Department of Pediatric Cardiology, St. Christopher's Hospital for Children, Temple University, Philadelphia, PA 19134, USA.
authors.forename: G K
authors.initials: GK
authors.lastname: Singh
authors.forename: S B
authors.initials: SB
authors.lastname: Greenberg
authors.forename: R K
authors.initials: RK
authors.lastname: Balsara
mesh_terms: D001013:Aorta, Thoracic / Q000002:abnormalities* / Q000601:surgery; D018618:Echocardiography, Doppler, Color; D006330:Heart Defects, Congenital / Q000175:diagnosis*; D006801:Humans; D007231:Infant, Newborn; D018810:Magnetic Resonance Angiography; D008297:Male