title: A quadricuspid aortic valve diagnosed by transesophageal echocardiography: report of a case.
abstract: A quadricuspid aortic valve is a very rare anomaly which may cause aortic regurgitation in adulthood. We describe herein the case of a 54-year-old man with aortic regurgitation in whom a quadricuspid aortic valve was diagnosed, not through transthoracic investigation, but by transesophageal echocardiography (TEE). TEE also indicated that the right coronary ostium was located in a lower position. Subsequent aortic valve replacement was successfully performed, at which time the diagnosis was confirmed. Thus, TEE played an important role in identifying the anatomy of the aortic valve and the location of the coronary ostium.
authors.affiliation: Department of Thoracic Cardiovascular Surgery, Juntendo University, Tokyo, Japan.
authors.forename: T
authors.initials: T
authors.lastname: Watanabe
authors.forename: Y
authors.initials: Y
authors.lastname: Hosoda
authors.forename: S
authors.initials: S
authors.lastname: Sasaguri
authors.forename: Y
authors.initials: Y
authors.lastname: Aikawa
mesh_terms: D001021:Aortic Valve / Q000002:abnormalities* / Q000000981:diagnostic imaging* / Q000601:surgery; D017548:Echocardiography, Transesophageal; D019918:Heart Valve Prosthesis Implantation; D006801:Humans; D008297:Male; D008875:Middle Aged