The case of a patient undergoing successful surgical resection of a hu
ge lipoma of the right atrium is presented. The diagnosis was establis
hed preoperatively by magnetic resonance imaging. The tumor was involv
ed intimately with the right coronary artery, and careful identificati
on and dissection were required to preserve the vessel. The tumor was
removed successfully, and follow-up at 1 year showed no evidence of re
currence.