Anomalous aortic origin of a coronary artery

Anomalous aortic origin of a coronary artery (AAOCA) is a rare congenital heart defect in which a coronary artery inappropriately arises from the aorta, usually from the incorrect sinus of Valsalva. This anomalous coronary artery often takes an interarterial (between the aorta and pulmonary artery), intraconal (within the myocardium), or intramural course (within the aortic wall), and is associated with an increased risk of sudden death in children.

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