Innocent left ventricular outflow tract membrane masquerading as vegetation.

Innocent left ventricular outflow tract (LVOT) membranes are a rare entity and found incidentally on echocardiography. The authors report a case of innocent LVOT membrane in a patient who was admitted with ischaemic stroke. Initial transthoracic echocardiography showed a possible valvular vegetation which was thought to be the cause of embolic stroke. Anticoagulation with coumadin and antibiotics were started. Subsequent Transesophageal echocardiography showed that it was more consistent with innocent LVOT membrane and not vegetation. Anticoagulation and antibiotics were discontinued, and on a follow-up over 5 years later, the membrane was stable in size and location without any complications.