Left Atrial Myxoma with Coronary Artery-left Atrial Fistula:Report of a Case

A 76-year-old woman underwent screening echocardiography. A cardiac mass was detected in the left atrium. It was located at the atrial septum, and was around 3 cm in size. Its surface was smooth and there was cystic cavity inside. Coronary angiography revealed rich blood flow from bilateral coronary arteries to the mass and massive shunt to the left atrium, which formed a fistulous connection. We performed tumor resection under cardiopulmonary bypass. Postoperative course was uneventful. Histopathologically, the tumor was myxoma. Cardiac myxoma is the most common primary cardiac tumor, but myxoma exhibiting coronary artery-left atrial fistula is fairly uncommon.