重症3枝病変を伴う左主幹部冠状動脈瘤に対する心拍動下手術の1例

Surgery for Left Main Coronary Artery Aneurysm with Severe Triple Vessel Disease；Report of a Case

はじめに　冠状動脈瘤はまれな疾患で，外科治療に関する明確なコンセンサスはない．われわれは左主幹部（LMCA）冠状動脈瘤に重症3枝病変を伴った症例に対し，心拍動（off-pump）下に瘤縫縮術と4枝冠状動脈バイパス術（CABG）を行った症例を経験したので，文献的考察を加え報告する．

Coronary artery aneurysm is a rare disease and its surgical indication is still controversial. We present a 63-year-old male having left main coronary artery aneurysm with 6 mm in diameter and symptomatic severe triple vessel disease. It was saccular and expanding into the myocardium. The patient successfully underwent off-pump quadruple coronary artery bypass and suture ligation of the aneurysmal neck. We believe that this technique is effective and less invasive to manage small or medium-sized coronary artery aneurysm in case aneurysmal shape, size, and location should be fitting for it.