title: Quadricuspid aortic valve: a rare etiology of aortic regurgitation.
abstract: Quadricuspid aortic valve is a rare cause of aortic insufficiency. We report two unusual cases of this valvular pathology associated with a dilatation of the aortic root. The mechanism leading to this valve incompetence is incompletely understood and is discussed in regard to these cases.
authors.affiliation: Cardiology Unit, Mont-Godinne University Hospital, Avenue G. Therasse 1, B-5530 Yvoir, Belgium.
authors.forename: O
authors.initials: O
authors.lastname: Godefroid
authors.forename: P
authors.initials: P
authors.lastname: Colles
authors.forename: S
authors.initials: S
authors.lastname: Vercauteren
authors.forename: Y
authors.initials: Y
authors.lastname: Louagie
authors.forename: B
authors.initials: B
authors.lastname: Marchandise
mesh_terms: D000368:Aged; D001021:Aortic Valve / Q000002:abnormalities* / Q000000981:diagnostic imaging / Q000601:surgery; D001022:Aortic Valve Insufficiency / Q000000981:diagnostic imaging* / Q000209:etiology* / Q000601:surgery; D003937:Diagnosis, Differential; D006349:Heart Valve Diseases / Q000150:complications* / Q000000981:diagnostic imaging* / Q000601:surgery; D019918:Heart Valve Prosthesis Implantation; D006801:Humans; D008297:Male; D008875:Middle Aged; D014463:Ultrasonography