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Related Concept Videos

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Related Experiment Video

Updated: May 26, 2026

Caudal-to-cranial Approach in Laparoscopic Right Hemicolectomy with Complete Mesocolon Excision and D3 Lymph Node Dissection
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Published on: January 9, 2026

The mesocolon: a prospective observational study.

K Culligan1, J C Coffey, R P Kiran

  • 1Department of Surgery, University of Limerick, Limerick, Ireland.

Colorectal Disease : the Official Journal of the Association of Coloproctology of Great Britain and Ireland
|January 11, 2012
PubMed
Summary
This summary is machine-generated.

This study reveals new details about the mesocolon

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Area of Science:

  • Surgical anatomy
  • Colorectal surgery
  • Surgical oncology

Background:

  • Total mesocolic excision (TME) may enhance survival for colon cancer patients.
  • Detailed knowledge of mesocolic anatomy is crucial for TME, but remains poorly characterized.
  • No prior studies have prospectively mapped the entire mesocolon's anatomy.

Purpose of the Study:

  • To formally characterize the mesocolic anatomy during and after total mesocolic excision.
  • To provide a comprehensive anatomical description of the entire mesocolon.
  • To elucidate previously undocumented anatomical findings relevant to TME.

Main Methods:

  • Total mesocolic excision performed on 109 patients undergoing total abdominal colectomy.
  • Mesocolon maintained intact for precise anatomical characterization from ileocecal to mesorectal levels.
  • Two- and three-dimensional schematic reconstructions generated to illustrate in situ conformation.

Main Results:

  • The mesocolon is continuous from the ileocecal to the rectosigmoid junction.
  • Mesenteric confluences identified at the ileocecal and rectosigmoid junctions, and at the hepatic and splenic flexures.
  • Toldt's fascia forms a distinct plane separating the mesocolon from the retroperitoneum.

Conclusions:

  • Mobilization of the mesocolon during TME reveals previously undocumented anatomical features.
  • These findings offer a rational basis for surgical, embryological, and anatomical approaches to the mesocolon.
  • The anatomical insights have broad implications for various scientific disciplines.