[Clinicopathological study on mitral ring calcification in the aged].
D000368:Aged; D002114:Calcinosis / Q000150:complications / Q000473:pathology*; D005260:Female; D006801:Humans; D008297:Male; D008875:Middle Aged; D008943:Mitral Valve / Q000473:pathology*; D008944:Mitral Valve Insufficiency / Q000209:etiology