Occluded coeliac axis and SMA at their origins (only tiny stumps are visible) with the IMA feeding enlarged arc of Riolan and wandering artery of Drummond (arrows) through to the SMA and its branches via the ileo-colic, and coeliac axis branches via the inferior pancreatico-duodenal branches of the SMA into the pancreatico-duodenal branches of the common hepatic artery.