Tight OM Lesion: Coronary angiogram in RAO caudal view

Tight obtuse marginal (OM) Lesion – right anterior oblique (RAO) caudal view

Left coronary angiogram in RAO caudal view (right anterior oblique view), showing a tight lesion in the obtuse marginal (OM) branch of the left circumflex (LCX) coronary artery. LAD: left anterior descending coronary artery. The OM lesion is marked by the light cyan 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.

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