Correlation of Endoscopic and Histologic Severity Scores in Pediatric Ulcerative Colitis at First Presentation

Area of Science:

• Pediatric Gastroenterology
• Inflammatory Bowel Disease Research
• Histopathology

Background:

• Histologic scoring systems are crucial for assessing ulcerative colitis (UC) disease activity.
• Adult studies show correlation between endoscopy and histology, with supported reproducibility of scoring systems.
• Effectiveness of endoscopic appearance in predicting pediatric UC histologic scores and interobserver reproducibility of adult scoring systems in children remain understudied.

Purpose of the Study:

• To evaluate the effectiveness of endoscopic appearance in predicting histologic scores in pediatric ulcerative colitis.
• To assess the interobserver reproducibility of adult histologic scoring systems in pediatric patients.
• To determine the value of the Geboes scoring system in pediatric ulcerative colitis.

Main Methods:

• Review of endoscopic images and concurrent biopsies from the distal colon and rectum in untreated pediatric patients with presumed UC.
• Utilized Mayo and Geboes scores for assessment.
• Calculated interobserver concordance using weighted-kappa statistic and compared averaged histologic scores to endoscopy scores using Spearman's coefficient.

Main Results:

• Weak to moderate positive correlation was observed between endoscopic scores and each histologic score.
• Fair to moderate interobserver agreement was found for histologic scores.
• The Geboes scoring system showed value in pediatric patients.
• Average scores for each histologic parameter were lower than average endoscopic scores.

Conclusions:

• The Geboes scoring system holds value for assessing ulcerative colitis activity in pediatric patients.
• While correlations exist, endoscopic appearance alone may not fully predict histologic severity in children.
• Further research with larger pediatric cohorts and treated patients is warranted.