CTICasesSingle Coronary Artery from Right Sinus
Imaging findings
Coronary CT angiography and catheter angiography show a single coronary artery arising from the right coronary cusp. The single large trunk branches to supply the entire myocardium, including a giant, tortuous Conus branch. No left coronary ostium is present.
Key takeaways
A single coronary artery arising from the right sinus of Valsalva is a rare congenital anomaly. The entire heart is supplied by a single ostium, which can branch into tortuous collaterals. While often benign, it carries a risk of sudden death if the main trunk has an interarterial course.
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