title: Torn cusp in a freestyle stentless bioprosthesis 5 years after implantation: report of a case.
abstract: The Freestyle stentless bioprosthesis (Freestyle valve) is widely used throughout the world because of its durability and benefits for hemodynamic function. However, we encountered a patient who required reoperation for a cuspal tear 5 years after the implantation of a Freestyle valve. The histological findings suggested that tissue degeneration with pannus formation might play a critical role in cuspal tears.
authors.affiliation: Division of Cardiovascular Surgery, Department of Surgery, Osaka University Graduate School of Medicine, (E1), 2-2 Yamada-oka, Suita, Osaka 565-0871, Japan.
authors.forename: Shinya
authors.initials: S
authors.lastname: Fukui
authors.forename: Motonobu
authors.initials: M
authors.lastname: Nishimura
authors.forename: Goro
authors.initials: G
authors.lastname: Matsumiya
authors.forename: Masao
authors.initials: M
authors.lastname: Yoshitatsu
authors.forename: Hajime
authors.initials: H
authors.lastname: Matsue
authors.forename: Yoshiki
authors.initials: Y
authors.lastname: Sawa
mesh_terms: D001022:Aortic Valve Insufficiency / Q000175:diagnosis / Q000601:surgery*; D001024:Aortic Valve Stenosis; D001705:Bioprosthesis; D004452:Echocardiography; D005500:Follow-Up Studies; D006350:Heart Valve Prosthesis; D019918:Heart Valve Prosthesis Implantation / Q000295:instrumentation*; D006801:Humans; D008297:Male; D008875:Middle Aged; D011475:Prosthesis Failure; D013902:Radiography, Thoracic; D012086:Reoperation; D012422:Rupture, Spontaneous; D013997:Time Factors