Mitral valve cleft without cardiac septal defect causing severe mitral regurgitation but allowing long survival.
D000328:Adult; D006344:Heart Septal Defects, Atrial / Q000150:complications* / Q000473:pathology; D006801:Humans; D008297:Male; D008943:Mitral Valve / Q000002:abnormalities* / Q000473:pathology; D008944:Mitral Valve Insufficiency / Q000209:etiology* / Q000473:pathology; D013997:Time Factors