Recurrent Pericardial Tamponade from Atrial Hemangioma

We encountered a 72-year-old woman with a left atrial hemangioma arising in the appendage and growing like an extracardiac mass. Life-threatening cardiac tamponade, recurrent over a 5-year clinical course, was the only sign of this rare tumor. The extraatrial growth pattern of the tumor made it difficult to distinguish the cardiac origin from a paracardiac mass. With the aid of cardiopulmonary bypass, the tumor was removed from the left atrium at the base of the appendage. Pathologic diagnosis was a combination of cavernous- and venous-type hemangioma. The postoperative course was uneventful, and the patient was doing well with no pericardial effusion at the 10-month follow-up.