急性冠症候群で発見された巨大冠状動脈瘤に対する手術

Surgical Treatment of Giant Coronary Artery Aneurysm Presented as Acute Coronary Syndrome

冠状動脈瘤は比較的まれな疾患である．通常無症状であり，心エコーやCT，冠状動脈造影（CAG）時に偶然発見されることが多い．破裂したり冠状動脈末梢への血栓閉塞を起こしたりすると，心タンポナーデや急性冠症候群（ACS）を発症する．

Coronary artery aneurysm is rare disease, usually asymptomatic and is often found by chance by echocardiography, computed tomography （CT） and coronary angiography.

However, its rupture or thrombotic obstruction to the periphery of the coronary artery leads to cardiac tamponade, angina pectoris, or myocardial infarction. We describe 2 cases of giant coronary artery aneurysm presented as acute coronary syndrome. Surgical resection of the aneurysm and coronary artery bypass grafting were successfully carried out under cardiopulmonary bypass. Postoperative courses of both cases were uneventful, and the patients were free of symptoms.