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Published on: July 12, 2018
Pathology of the defunctioned rectum in ulcerative colitis
B F Warren1, N A Shepherd, D C Bartolo
1Department of Histopathology, Bristol Royal Infirmary.
Gut
|April 1, 1993
Summary
Inflammatory changes in defunctioned rectal stumps after ulcerative colitis surgery can mimic Crohn's disease. Accurate histology is crucial to avoid misdiagnosis and ensure patients receive appropriate treatment, like pelvic ileal reservoirs.
Area of Science:
- Gastroenterology
- Colorectal Surgery
- Surgical Pathology
Background:
- Faecal diversion can cause inflammatory changes in the defunctioned bowel segment.
- Histological features in these segments can be complex and mimic other conditions.
Purpose of the Study:
- To investigate the pathology of defunctioned rectal stumps in patients with ulcerative colitis.
- To determine if these changes can be misdiagnosed as Crohn's disease.
Main Methods:
- Histopathological examination of 15 defunctioned rectal stumps from patients who underwent total colectomy for ulcerative colitis.
- Review of colectomy specimens and subsequent clinical, radiological, and pathological follow-up.
Main Results:
- Predominantly mucosal inflammatory changes were observed in all rectal stumps.
- Additional features included lymphoid hyperplasia, transmural inflammation, granulomas, and fissures.
- Histological findings mimicked Crohn's disease in some cases, but unequivocal ulcerative colitis was confirmed in all colectomy specimens.
Conclusions:
- Histology of defunctioned rectal stumps in ulcerative colitis can erroneously suggest Crohn's disease.
- Misdiagnosis may lead to withholding beneficial treatments such as pelvic ileal reservoirs.
- Careful pathological review and clinical correlation are essential for accurate diagnosis.
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