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Collagenous colitis: histopathology and clinical course
J S Goff1, J L Barnett, T Pelke
1Department of Medicine, University of Michigan Hospitals, Ann Arbor, USA.
The American Journal of Gastroenterology
|January 1, 1997
Summary
Collagenous colitis often resolves spontaneously or with treatment, with 63% of patients experiencing lasting symptom relief. Histology did not predict disease course, but treatment-free remissions are common.
Area of Science:
- Gastroenterology
- Pathology
Background:
- Collagenous colitis is a chronic diarrheal disease with microscopic inflammation and a thickened collagen layer.
- Long-term follow-up data on collagenous colitis natural history are limited.
Purpose of the Study:
- To determine the natural clinical history of collagenous colitis.
- To investigate the relationship between histopathologic changes and disease course.
Main Methods:
- Retrospective review of 31 collagenous colitis cases diagnosed before 1992.
- Pathologic review of biopsy specimens for collagen thickness, epithelial damage, and inflammation.
- Telephone interviews for clinical history and follow-up (mean 3.5 years).
Main Results:
- 63% of patients achieved symptom resolution, while 37% had ongoing symptoms.
- No significant differences in histology (collagen thickness, inflammation) between resolved and ongoing groups.
- Paneth cell metaplasia was more frequent in patients with ongoing symptoms.
Conclusions:
- A majority of collagenous colitis patients experience lasting symptom resolution.
- Arthritis and NSAID use were common but not linked to disease course or histology.
- Initial histology, except possibly Paneth cell metaplasia, does not reliably predict disease severity or course.