title: [Two Cases of Quadricuspid Aortic Valve].
abstract: We report 2 cases (a 59-year-old man and a 61-year-old man) of quadricuspid aortic valve that had aortic regurgitation. Preoperative transthoracic or transesophageal echocardiography was useful for diagnosing definitely and deciding treatment plan. Their aortic valves were type F in each according to the Hurwitz-Roberts classification. They underwent aortic valve replacement and had good postoperative courses.
authors.affiliation: Department of Cardiovascular Surgery, Nihonkai General Hospital, Sakata, Japan.
authors.forename: Kazue
authors.initials: K
authors.lastname: Nakashima
authors.forename: Hideaki
authors.initials: H
authors.lastname: Uchino
authors.forename: Tetsuro
authors.initials: T
authors.lastname: Uchida
authors.forename: Takao
authors.initials: T
authors.lastname: Shimanuki
mesh_terms: D001021:Aortic Valve / Q000002:abnormalities*; D001022:Aortic Valve Insufficiency / Q000209:etiology / Q000601:surgery; D017548:Echocardiography, Transesophageal; D006801:Humans; D008297:Male; D008875:Middle Aged