Congenital anomaly of the true double-lumen right coronary artery: An extremely rare case.

Double right coronary artery is a rare anomaly which is mostly identified by two separate pathways with a common ostium (one-two way). We report herein an extremely rare case of congenital true double-lumen right coronary artery, an anomaly, where a common pathway from the ostium to the proximal segment diverged into two separate pathways from the proximal to the mid-segment and then converged into one pathway (one-two-one way).