Evolving Landscape of Paediatric Inflammatory Bowel Disease: Insights from a Decade-Long Study in North-East Slovenia on Incidence, Management, Diagnostic Delays, and Early Biologic Intervention

Background: In the past decade, significant progress has been achieved in the care of children with inflammatory bowel disease (IBD). Our study concentrated on assessing the incidence and management of IBD in children in North-Eastern Slovenia over a 10-year period.

Methods: Medical data from children and adolescents diagnosed with IBD in North-Eastern Slovenia (2014-2023) was analysed. Disease incidence and management of children were assessed. Findings were compared between two periods (2014-2019 and 2020-2023, coinciding with the COVID-19 pandemic).

Results: 87 patients (median age 15.5 year; 50.6% male) with IBD (43.7% Crohn's disease (CD)), diagnosed between 2014 and 2023 were included. Extraintestinal manifestations were more common in CD than ulcerative colitis (UC) (15.8% vs. 2.4%, p < 0.05). Median delay from symptom onset to diagnosis was 2 months, lower in UC than CD (NS). Mean annual IBD incidence per 100,000 children aged 0 to 19 years was 6.4 (95% CI 4.4-8.3), slightly lower for CD than UC (2.8/100,000 vs. 3.1/100,000). In the second period, IBD incidence significantly rose (9.1 vs. 4.6, p < 0.05). During this period, 53% of CD patients transitioned to biological treatment within three months of diagnosis.

Conclusion: IBD incidence rose among children in North-Eastern Slovenia over the past decade. Additionally, more children with CD underwent biological therapy in the second period.