We report the case of a 74 -year-old man who presented with endocarditis on a porcine aortic valve replacement. Five of six blood cultures grew listeria monocytogenes. Transoesophageal echocardiography demonstrated the presence of a cavity posterior to the aortic annulus, apparently communicating with the left atrium. The patient underwent successful aortic valve re-replacement.
Listeria endocarditis is rare with only 58 reported cases in the literature and is associated with high mortality.
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