Inframesocolic space

Last revised by Craig Hacking on 8 Apr 2020

The inframesocolic space is the peritoneal space below the root of the transverse mesocolon. The supramesocolic space lies above the transverse mesocolon's root.

It can be divided into two unequal spaces posteriorly by the mesentery of the small bowel as it runs from the duodenojejunal flexure in the left upper quadrant to the ileocecal valve in the right lower quadrant:

The inframesocolic space also contains paracolic gutters which are peritoneal recesses that are inferolateral extensions of their corresponding inframesocolic spaces on the posterior abdominal wall lateral to the ascending and descending colon respectively:

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Cases and figures

  • Figure 1: coronal
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  • Figure 2: axial
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