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Obstructive colitis. Ulceroinflammatory lesions occurring proximal to colonic obstruction
M Toner1, D Condell, D S O'Briain
1Histopathology Department, St. James's Hospital, Dublin, Ireland.
The American Journal of Surgical Pathology
|August 1, 1990
Summary
Obstructive colitis, characterized by ulceroinflammatory lesions proximal to a blockage, often affects elderly females with chronic illnesses. Ischemic factors likely contribute to this condition, distinguishing it from Crohn's disease.
Area of Science:
- Gastroenterology
- Colorectal Surgery
- Pathology
Background:
- Obstructive colitis presents as ulceroinflammatory lesions proximal to a colonic obstruction.
- This condition is often observed in elderly patients with pre-existing chronic illnesses.
Purpose of the Study:
- To characterize the clinical, endoscopic, and microscopic features of obstructive colitis.
- To explore potential etiologies and differentiate it from other colitis types.
Main Methods:
- Retrospective review of nine cases of obstructive colitis over a nine-month period.
- Analysis of patient demographics, underlying causes of obstruction, and colitis characteristics.
- Microscopic examination of colonic tissue.
Main Results:
- Seven cases involved adenocarcinoma, two involved diverticular disease.
- Colitis lesions varied from circumscribed ulcers to extensive circumferential inflammation, separated from the obstruction.
- Microscopically, lesions showed granulation tissue with mixed inflammatory infiltrate, suggesting ischemia.
Conclusions:
- Obstructive colitis has distinct features differentiating it from Crohn's disease and other colitis.
- Ischemia, possibly due to increased intramural pressure, is a likely cause, potentially synergistic with altered fecal flora.
- Complications include perforation and anastomotic breakdown.