CTICasesAnomalous Left Main Coronary Artery Arising from RCA with Fistula to Coronary Sinus
Imaging findings
Gated CTA demonstrates a markedly dilated coronary sinus and tortuous, enlarged coronary arteries. An anomalous left main coronary artery is seen originating from the right coronary artery, which then gives rise to circinous coronary vessels that drain directly into the coronary sinus, forming a fistula.
Key takeaways
This case illustrates a rare and complex coronary anomaly involving an anomalous origin of the left main coronary artery from the RCA, combined with a coronary artery fistula draining into the coronary sinus. The angiographic findings were striking, even if the initial cath report did not fully characterize the anomalous origin.
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