Percutaneous intervention of left main coronary artery chronic total occlusion: A case report

Chronic total occlusion of left main coronary artery (LMCA) is a rare finding in angiograms and is described as a total lack of antegrade blood flow to the coronary arteries with retrograde collateral circulation (1, 2). A majority of the myocardium is under ischemic load and is associated with high mortality ratio. Although CABG operation is the standard revascularization method, recent studies show that PCI can alternatively be safely performed for certain patients (3, 4).