PMC5864522_01
Intraoperative view showing the cord-shaped left main (arrow), the right coronary ostium (pickup holding).
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PMC5864522_01_10-1055-s-0038-1637737-i170289crc-1.jpg
FI170289crc-1
The RCA was originating normally from the right coronary sinus; however, the left coronary sinus had a blind indentation from which a firm cord-like left main coronary artery was originating and continued for ~2 cm in its ordinary course then branched to normal LAD and left Cx (LCx) arteries ( Fig. 1 ).