You are evaluating a patient in the preoperative clinic. You…

You are evaluating a patient in the preoperative clinic. You notice an early diastolic murmur with an S3 gallop, and there is a widened pulse pressure when the blood pressure is taken. Review of past cardiology notes shows concern for eccentric left ventricular dilation (thinning of the ventricular wall). The patient reports symptoms of intermittent dyspnea with exertion. What valvular disease MOST matches this description?