Unhide duodenum - extended Cattel Braasch manoeuvre

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In this short video of a human dissection specimen, the ascending colon and the jejunum and ileum, which were mobilised via the Cattel-Braasch manoeuvre, are flipped en bloc over cranially, unveiling the duodenum.

In the Cattel-Braasch manoeuvre, or right-sided visceral rotation, the ascending colon and mesocolon and the jejunum and ileum are detached from the back wall. This is done by separating from the abdominal back wall the attachment plane of the ascending colon and mesocolon. This detachment can be performed from right to left or from left to right. From right to left means starting in the paracolic gutter at the lateral side of the ascending colon and detaching the ascending (meso)colon working medially, towards the root of the mesentery. From left to right means starting at the root of the mesentery and detaching the ascending colon in lateral direction, ending in the paracolic gutter. The freed intestines are then lifted and moved to the side.

The Cattel-Braasch manoeuvre, at least partially detaching the ascending colon and mesocolon (not as extensively as in this video), is a regular part of an ascending hemicolectomy.

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