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Difference between early onset and late-onset pediatric ulcerative colitis.

Ryusuke Nambu1, Shin-Ichiro Hagiwara2, Mitsuru Kubota2

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Early onset pediatric ulcerative colitis (EO-UC) presents with more pancolitis and extra-intestinal issues, often with a longer diagnostic delay compared to late onset UC. Diagnosis and treatment can be more challenging for EO-UC patients.

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Area of Science:

  • Pediatric Gastroenterology
  • Inflammatory Bowel Disease Research
  • Clinical Epidemiology

Background:

  • Early onset ulcerative colitis (EO-UC) differs from late onset UC (LO-UC) due to genetic factors.
  • Limited data exists on EO-UC clinical features in Asian populations.

Purpose of the Study:

  • To compare the clinical presentation and disease course of EO-UC (0-7 years) with LO-UC (8-15 years).
  • To identify differences in diagnosis, disease extent, and complications between EO-UC and LO-UC.

Main Methods:

  • Retrospective analysis of 63 pediatric UC patients diagnosed between 2004-2014 in Japan.
  • Comparison of EO-UC (n=10) and LO-UC (n=53) groups based on clinical data.

Main Results:

  • EO-UC patients showed a higher incidence of pancolitis (100% vs 70%) compared to LO-UC.
  • Diagnostic delay was significantly longer in EO-UC (9.0 months vs 2.6 months).
  • Extra-intestinal complications were more prevalent in EO-UC (50% vs 11%) at diagnosis.

Conclusions:

  • EO-UC is associated with pancolitis, delayed diagnosis, and increased extra-intestinal manifestations.
  • Diagnosis and management of EO-UC may present greater challenges than LO-UC.