title: Flat fibrin thrombus deposition on tissue valve after aortic valve replacement.
abstract: Bioprosthetic valves have a lower thrombogenicity than mechanical valves, thus long-term systemic anticoagulation can be avoided. Herein, we present an extremely rare case of fibrin thrombus formation on tissue valve, which was observed during the second operation 2 years after the initial operation by chance. This report gives us a word of caution regarding the thrombus formation on the bioprosthetic valves that could be unaware of the presence for the long term.
authors.affiliation: Department of Cardiovascular Surgery, Takamatsu Red Cross Hospital, Takamatsu City, Kagawa Prefecture, Japan.
authors.forename: Motoaki
authors.initials: M
authors.lastname: Ohnaka
authors.forename: Kazunobu
authors.initials: K
authors.lastname: Nishimura
authors.forename: Shunji
authors.initials: S
authors.lastname: Kurokawa
mesh_terms: D000368:Aged; D001021:Aortic Valve / Q000473:pathology* / Q000601:surgery*; D001705:Bioprosthesis / Q000009:adverse effects*; D005337:Fibrin; D006350:Heart Valve Prosthesis / Q000009:adverse effects*; D006801:Humans; D008297:Male; D013927:Thrombosis / Q000209:etiology* / Q000473:pathology*
chemical_list: D005337:Fibrin