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Related Experiment Video

Updated: Oct 19, 2025

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What is the precaecocolic fascia?

Jennifer Crabbe1, John Shaw-Dunn1, Angus MacDonald2

  • 1Anatomy Facility, School of Life Sciences, University of Glasgow, Glasgow, UK.

Clinical Anatomy (New York, N.Y.)
|September 18, 2021
PubMed
Summary

The precaecocolic fascia, or Jackson's membrane, is a peritoneal fold found in 12 of 26 cadavers. This study found no link to bowel malformation or inflammation, suggesting "membrane" is a better term.

Keywords:
Jackson's membranecoloncolorectal surgeryembryologyperitoneumprecaecocolic fascia

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Murine Ileocolic Bowel Resection with Primary Anastomosis
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Area of Science:

  • Anatomy
  • Surgical Anatomy
  • Embryology

Background:

  • The precaecocolic fascia, also known as Jackson's membrane, is a peritoneal fold.
  • Its origin and association with abdominal pain have been debated since its discovery in 1913.

Purpose of the Study:

  • To investigate the frequency, form, and structure of the precaecocolic fascia.
  • To determine if it is associated with bowel malformation or previous inflammation.

Main Methods:

  • Dissection of 26 cadavers to identify the precaecocolic fascia.
  • Histological examination of its structure and latex injections to trace arteries.
  • Assessment for colonic malrotation and signs of inflammation.

Main Results:

  • Precaecocolic fascia-like membranes were found in 12 of 26 abdomens, with variable forms and sizes.
  • Histology revealed a peritoneal fold with a thickened fibrous lamina and associated arteries.
  • No significant association was found between the fascia and colonic malrotation or markers of inflammation.

Conclusions:

  • The term "membrane" may be more appropriate than "fascia" for this structure.
  • It is likely a peritoneal fold of uncertain origin, not post-inflammatory.
  • The precaecocolic membrane may influence colonic mobility and complicate surgical procedures.