What is the best way to treat left main coronary artery disease?

umerous researchers have attempted to improve the methods of percutaneous coronary intervention (PCI), with the goal of obtaining equivalent or better long-term results compared with coronary artery bypass graft (CABG). In the beginning of the drug eluting stent (DES) era, the initial success rate was very high rate and the target lesion revascularization (TLR) of PCI was dramatically improved. However, unprotected left main coronary artery (ULMCA) lesions, chronic total occlusion, bifurcated lesions and diffuse coronary atherosclerosis are still major problems in the PCI field.