title: Left ventricular outflow tract obstruction caused by accessory mitral valve tissue.
abstract: This report describes the echocardiographic diagnosis of accessory mitral valve tissue causing left ventricular outflow tract obstruction in a symptomatic man. The accessory tissue was surgically removed and the mitral valve replaced with complete resolution of left ventricular outflow tract gradient and symptoms. The case illustrates the importance of transthoracic and transesophageal echocardiography in the diagnosis and preoperative evaluation of this rare but treatable cause of subaortic valve obstruction.
authors.affiliation: Department of Cardiology, St Georges Hospital, London, United Kingdom. rajdoc.Sharma@tiscali.co.uk
authors.forename: Rajan
authors.initials: R
authors.lastname: Sharma
authors.forename: John
authors.initials: J
authors.lastname: Smith
authors.forename: Perry M
authors.initials: PM
authors.lastname: Elliott
authors.forename: William J
authors.initials: WJ
authors.lastname: McKenna
authors.forename: Denis
authors.initials: D
authors.lastname: Pellerin
mesh_terms: D006801:Humans; D008297:Male; D008875:Middle Aged; D008943:Mitral Valve / Q000002:abnormalities* / Q000000981:diagnostic imaging* / Q000601:surgery; D008946:Mitral Valve Stenosis / Q000150:complications* / Q000000981:diagnostic imaging* / Q000601:surgery; D016896:Treatment Outcome; D014463:Ultrasonography; D014694:Ventricular Outflow Obstruction / Q000000981:diagnostic imaging* / Q000209:etiology* / Q000517:prevention & control