Stanford A型急性大動脈解離を発症した単一冠状動脈の1例

Stanford Type A Acute Aortic Dissection in a Patient with a Single Coronary Artery：Report of a Case

はじめに　単一冠状動脈は疫学的に0.066％ときわめてまれな疾患で1），その多くは無症状である2）．われわれは，Stanford A型急性大動脈解離（A型AAD）を発症した単一冠状動脈の1例を経験したので報告する．

A single coronary artery is a very rare anomaly and is usually asymptomatic. Here we report a case of a single coronary artery complicated with Stanford type A acute aortic dissection. A 58-year-old male with chest pain was transported to our institution by ambulance. He was diagnosed with a single coronary artery accompanied by acute coronary syndrome. The single coronary artery originated from the left sinus of Valsalva and the right coronary branch coursed between the aorta and the pulmonary artery. It was, therefore considered difficult to perform catheter intervention, and urgent coronary artery bypass surgery was planned. Enhanced computed tomography, however, revealed Stanford type A acute aortic dissection, and aortic root replacement combined with coronary artery bypass grafting was performed by emergency. The postoperative course was uneventful.