title: Aneurysm of the membranous ventricular septum and accessory valvular tissue causing obstruction of the pulmonary outflow tract in corrected transposition.
abstract: Aneurysm of the membranous portion of the ventricular septum and accessory valvular tissue are two infrequent congenital lesions. This case illustrates a rare association of aneurysm of the membranous septum and accessory valvular tissue originating from the mitral valve, causing right-sided ventricular outflow tract obstruction in a patient with corrected transposition. Multiplane transesophageal echocardiography allowed for determination of the dual nature of the obstruction.
authors.affiliation: Department of Echocardiography, Montreal Heart Institute, Quebec, Canada.
authors.forename: A G
authors.initials: AG
authors.lastname: Rodrigues
authors.forename: L A
authors.initials: LA
authors.lastname: Mercier
authors.forename: J C
authors.initials: JC
authors.lastname: Tardif
authors.forename: P
authors.initials: P
authors.lastname: de Guise
mesh_terms: D000328:Adult; D017548:Echocardiography, Transesophageal; D006322:Heart Aneurysm / Q000150:complications* / Q000000981:diagnostic imaging; D006346:Heart Septum; D006352:Heart Ventricles; D006801:Humans; D008297:Male; D008943:Mitral Valve / Q000002:abnormalities* / Q000000981:diagnostic imaging; D011651:Pulmonary Artery / Q000000981:diagnostic imaging; D014188:Transposition of Great Vessels / Q000150:complications*; D014694:Ventricular Outflow Obstruction / Q000000981:diagnostic imaging / Q000209:etiology*