Anomalous Origin of the Right Coronary Artery from the Left Coronary Sinus: Case Report and Literature Review


A 41-year-old man with no relevant cardiac history presented for evaluation of episodic syncope. Electrocardiography showed sinus rhythm with right bundle-branch block and Q waves in leads II, III, and aVF. Subsequent exercise treadmill testing and technetium 99m sestamibi study revealed a reversible posterior defect. Coronary angiography later showed a right coronary artery that arose from the left coronary sinus—an anomaly that has been associated with angina, myocardial infarction, and sudden cardiac death.

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