Left Circumflex Off RCA

Left circumflex - LCX; right coronary artery - RCA

Case #1a. RCA (arrow) in normal position. MIP-ed image.

Case #1b. Same patient, proximal LCX (left arrow) seen originating off proximal RCA. Distal LCX seen (right arrow).

Case #1c. Same patient, retroaortic course of LCX demonstrated (arrow).

Case #2a. Another patient, proximal portion of LCX coming off RCA (arrow).

Case #2b. Retroaortic course of LCX (arrow).

Case #2c. The distal LCX (arrow).

Case #2d. The LCX (arrow) visualized in entirety, seen originating from RCA and coursing retroaortically.