CTICasesAnomalous Origin of the Left Coronary Artery from the Non-Coronary Cusp
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Imaging findings
Coronary CT angiogram shows a normal origin of the right coronary artery from the right coronary sinus. The left coronary artery exhibits an anomalous origin, arising directly from the non-coronary cusp of the aorta. The artery then courses to its normal anatomical distribution.
Key takeaways
Anomalous origin of the left coronary artery from the non-coronary cusp is an extremely rare congenital coronary anomaly. While many coronary anomalies can course interarterially and pose a risk of sudden cardiac death, those arising from the non-coronary cusp must be evaluated carefully for their course and any signs of luminal narrowing.
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