There are no differencies in the rates of restenosis and MACE among the group of patients treated with drug eluting stents or bare metal stents, with high or low risk of coronary artery bypass grafting, with the lesions on the proximal or distal LMCA and with the lesions on one or many branches of the coronary artery. Conclusion: Precutaneous stenting of unprotedted left main coronary artery safe and effective.