Iatrogenic left main coronary artery thrombosis during percutaneous coronary intervention

During diagnostic angiographic procedures or percutaneous coronary angioplasty-stenting of the other coronary arteries, the overall risk for a complication related to the left main coronary artery (LMCA) is low; however, if such complications occur, they tend to be life-threatening and contribute to a large part of the total catheter-related mortality. We encountered a case of iatrogenic significant subtotal left main coronary artery thrombotic stenosis in a patient who had undergone prior percutaneous transluminal coronary artery angioplasty-stenting of the left circumflex artery. In light of the literature, an extremely rare clinical presentation of iatrogenic left main coronary artery thrombosis is discussed.