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Updated: Aug 10, 2026
08:20
Murine Distal Colostomy, A Novel Model of Diversion Colitis in C57BL/6 Mice
Published on: July 12, 2018
[Pathogenesis and pathophysiology of sigmoid diverticulitis]
1Abteilung für Gastroenterologie, Universitätsklinikum Essen.
Der Chirurg; Zeitschrift Fur Alle Gebiete Der Operativen Medizen
|December 1, 1995
Summary
Diverticular disease commonly affects the sigmoid colon. Pseudodiverticula, not true diverticula, are common and can cause inflammation due to microperforations.
Area of Science:
- Gastroenterology
- Colorectal Surgery
- Anatomy
Context:
- Diverticular disease frequently involves the sigmoid colon, a segment with unique anatomical characteristics.
- True diverticula are rare; most cases involve pseudodiverticula, which are mucosal and submucosal herniations.
- These herniations occur through muscle layer defects due to altered colonic wall morphology and pressure dynamics.
Purpose:
- To explain the pathogenesis of pseudodiverticula in the sigmoid colon.
- To highlight the role of intraluminal and intra-abdominal pressures in diverticula formation.
- To identify microperforations as a key factor in symptomatic diverticular disease.
Summary:
- The sigmoid colon's anatomy predisposes it to diverticular disease.
- Pseudodiverticula result from mucosal/submucosal herniation through muscle defects, driven by pressure imbalances.
- Microperforations at the diverticula tips are crucial for developing inflammation and symptoms.
Impact:
- Provides insight into the common etiology of sigmoid colon diverticular disease.
- Clarifies the distinction between true and pseudodiverticula.
- Establishes a link between microperforations and the symptomatic presentation of diverticular disease.
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