[A Giant Right Coronary Artery Aneurysm:Report of a Case].

We report the case of a 49-year-old woman with a giant atherosclerotic thrombus-filled aneurysm of the right coronary artery. She was referred to our hospital because of abnormal finding of the chest X-ray. Echocardiography revealed a large cystic mass adjacent to the right atrium and computed tomography revealed a giant aneurysm of middle segment of the right coronary artery. Based on the size of the aneurysm, the patient underwent exclusion of the aneurysm by proximal and distal ligation and coronary artery bypass surgery. Giant coronary artery aneurysm is rare, and the management should be individualized depending on size, location, and clinical context.