CTICasesAnomalous Right Coronary Artery
Imaging findings
Coronary CT angiography shows the right coronary artery (RCA) arising anomalously from the left coronary cusp. The RCA has a narrowed, intramural course between the aorta and pulmonary artery. There is associated hypertrophy of the right ventricular apex.
Key takeaways
An anomalous right coronary artery arising from the left sinus with an interarterial/intramural course is a high-risk congenital anomaly. Compression of the intramural segment between the great vessels during exercise can cause ischemia, arrhythmia, or sudden death.
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