[Comparative analysis of atherosclerotic plaque distribution in the left main coronary artery and proximal segments of left anterior descending and left circumflex arteries in patients qualified for percutaneous coronary angioplasty].

Purpose: The most frequent cause of ischemic heart disease is atherosclerosis. The atherosclerotic process is responsible for lumen stenosis in coronary arteries leading to impaired blood flow and reduced perfusion. The most important human epicardial artery is the left main coronary stem (LMS) which divides into two "daughter" branches: left anterior descending artery (LAD) and left circumflex artery (LCX).