Myxomatous degeneration of cardiac valves.
D000328:Adult; D000368:Aged; D001021:Aortic Valve / Q000473:pathology*; D001022:Aortic Valve Insufficiency / Q000473:pathology / Q000601:surgery; D005260:Female; D006349:Heart Valve Diseases / Q000473:pathology*; D006801:Humans; D008297:Male; D008382:Marfan Syndrome / Q000473:pathology; D008875:Middle Aged; D008943:Mitral Valve / Q000473:pathology*; D008944:Mitral Valve Insufficiency / Q000473:pathology / Q000601:surgery; D009093:Mucus; D012189:Retrospective Studies