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Analysis of Endoscopic Evaluation Reliability for Ulcerative Colitis in Histological Remission
Mimari Kanazawa1, Keiichi Tominaga1, Akira Yamamiya1
1Department of Gastroenterology, Dokkyo Medical University, Tochigi 321-0293, Japan.
The Mayo endoscopic subscore (MES) shows low interobserver reliability for evaluating ulcerative colitis (UC) in histological remission. Even experts struggle with specific MES parameters, impacting UC assessment.
Area of Science:
- Gastroenterology
- Endoscopic assessment
- Inflammatory bowel disease research
Background:
- The Mayo endoscopic subscore (MES) is crucial for assessing ulcerative colitis (UC) activity.
- Evaluating UC endoscopic remission requires reliable scoring systems.
Purpose of the Study:
- To assess the interobserver reliability (IOR) of MES parameters in UC patients with histological remission.
- To identify specific MES parameters that pose challenges for endoscopists.
Main Methods:
- 42 endoscopists evaluated 100 UC cases using MES parameters based on histological remission.
- Interobserver reliability was calculated using multiple kappa statistics for each MES parameter.
- Analysis was stratified by observer experience level (experts vs. trainees).
Main Results:
- Overall IOR for MES parameters was slight to fair, indicating low reliability.
- Trainee groups showed low IOR across all parameters.
- Even UC practice experts demonstrated low IOR for "Erythema" and "Decreased vascular pattern".
Conclusions:
- Significant challenges exist in applying MES parameters consistently for UC in histological remission.
- Specific MES findings like "Erythema" and "Decreased vascular pattern" require refinement for improved diagnostic accuracy.
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