Courtesy of Dr. Carlos Fava. Left main coronary artery (LMCA) lesions have always been defined as high-risk, with surgery as treatment of choice. Drug-eluting stents (DES) have slowly changed that, but their use still lacks strong supporting evidence.   The Evaluation of XIENCE versus Coronary Artery Bypass Surgery for Effectiveness of Left Main Revascularization (EXCEL) study…