Tight OM Lesion: Coronary angiogram in RAO caudal view

Tight OM Lesion: Coronary angiogram in RAO caudal view

Left coronary angiogram in RAO caudal view, showing a tight lesion in the obtuse marginal branch of the left circumflex coronary artery. LAD: left anterior descending coronary artery. The OM lesion is marked by the light blue arrow and is seen in the proximal portion of the obtuse marginal, which is a major branch of the left circumflex. The angiographic catheter tip is seen in the left main coronary artery.