Myxomatous degeneration of the mitral valve.
D000328:Adult; D000368:Aged; D000792:Angiography; D006328:Cardiac Catheterization; D002932:Cineangiography; D004562:Electrocardiography; D005260:Female; D006333:Heart Failure / Q000209:etiology; D006349:Heart Valve Diseases / Q000145:classification / Q000473:pathology; D006350:Heart Valve Prosthesis; D006801:Humans; D008297:Male; D008382:Marfan Syndrome / Q000145:classification; D008875:Middle Aged; D008943:Mitral Valve / Q000473:pathology; D008944:Mitral Valve Insufficiency / Q000145:classification / Q000209:etiology* / Q000601:surgery