Primary left ventricular mural endocarditis diagnosed by transesophageal echocardiography.

Primary left ventricular mural abscess was detected by transesophageal echocardiography and was confirmed at necropsy in a 44-year-old woman with Staphylococcus aureus bacteremia and cerebrovascular embolism. In two occasions, transthoracic echocardiography failed to show the mural abscess in this patient. Because of the aggressive nature of primary mural endocarditis, early use of transesophageal echocardiography is recommended in patients with Staphylococcal bacteremia and suspected endocarditis even in the absence of valvular abnormalities detectable by the transthoracic approach.