title: Surgical pathology of removed natural and prosthetic heart valves.
mesh_terms: D001705:Bioprosthesis; D003251:Constriction, Pathologic; D006349:Heart Valve Diseases / Q000473:pathology; D006350:Heart Valve Prosthesis; D006351:Heart Valves / Q000473:pathology* / Q000601:surgery; D006801:Humans; D011475:Prosthesis Failure; D012086:Reoperation