title: Pulmonary blood supply by a branch from the distal ascending aorta in pulmonary atresia with ventricular septal defect: differential diagnosis of fifth aortic arch.
abstract: A patient with pulmonary atresia and a ventricular septal defect is described in whom an arterial branch from the distal ascending aorta supplied segments of both lungs. The branch is considered to represent a persistent fifth aortic arch. The possible morphogenesis and differential diagnosis of a communication between the ascending aorta and the pulmonary artery in pulmonary atresia with ventricular septal defect are discussed.
authors.affiliation: Department of Diagnostic Imaging, Hospital for Sick Children, Toronto, Ontario, Canada.
authors.forename: S J
authors.initials: SJ
authors.lastname: Yoo
authors.forename: C A
authors.initials: CA
authors.lastname: Moes
authors.forename: P E
authors.initials: PE
authors.lastname: Burrows
authors.forename: S
authors.initials: S
authors.lastname: Molossi
authors.forename: R M
authors.initials: RM
authors.lastname: Freedom
mesh_terms: D000293:Adolescent; D001011:Aorta / Q000002:abnormalities*; D001013:Aorta, Thoracic / Q000002:abnormalities*; D001018:Aortic Diseases / Q000151:congenital* / Q000000981:diagnostic imaging; D001027:Aortography; D001159:Arterio-Arterial Fistula / Q000151:congenital* / Q000000981:diagnostic imaging; D006328:Cardiac Catheterization; D003937:Diagnosis, Differential; D006345:Heart Septal Defects, Ventricular / Q000473:pathology*; D006801:Humans; D008297:Male; D011651:Pulmonary Artery / Q000002:abnormalities*; D011664:Pulmonary Valve / Q000002:abnormalities*