Figure 1.

The Cattell-Braasch manoeuvre. The right colon, small bowel mesentery root, and duodenum (Kocherization) are mobilised from right to the left quadrant to allow exposure of the retroperitoneal structures and major vasculature. With completion of the Cattel-Braasch manoeuvre, the root of the SMA can be dissected free and SMA isolated from the tumour. (Taken from https://media.springernature.com/original/springer-static/image/art:10.1007/s11605-015-29581/MediaObjects/11605_2015_2958_Fig2_HTML.gif.)