Chronic intestinal inflammation and seronegative spondyloarthropathy in children

F Conti1, O Borrelli, C Anania

  • 1Department of Rheumatology, University of Rome La Sapienza, Rome, Italy.

Insights

Pediatric patients with suspected inflammatory bowel disease often have seronegative spondyloarthropathy with intestinal inflammation. Many showed indeterminate colitis or lymphoid nodular hyperplasia, indicating a potential risk for developing inflammatory bowel disease.

Area of Science:

  • Pediatric Gastroenterology
  • Rheumatology
  • Immunology

Background:

  • Association between spondyloarthropathy and intestinal inflammation is known in adults, but less described in children.
  • This study focuses on pediatric patients initially referred for suspected inflammatory bowel disease (IBD).

Purpose of the Study:

  • To describe intestinal inflammatory lesions and rheumatological features in pediatric patients with seronegative spondyloarthropathy.
  • To investigate children presenting with symptoms suggestive of IBD who were found to have spondyloarthropathy.

Main Methods:

  • 129 children with suspected IBD were evaluated over 18 months.
  • 31 children (ages 5-17) with arthropathy underwent ileo-colonoscopy, biopsy, and rheumatological assessment, including imaging of sacroiliac joints.
  • Patients were assessed for HLA B27 status and adherence to European Spondyloarthropathy Study Group criteria.

Main Results:

  • Only 7 children had classical IBD (4 ulcerative colitis, 3 Crohn's disease).
  • 12 had indeterminate colitis, and 12 showed lymphoid nodular hyperplasia with chronic intestinal inflammation distinct from IBD.
  • All patients were HLA B27 negative and met spondyloarthropathy criteria, with 5 classified as undifferentiated.

Conclusions:

  • Children investigated for IBD with seronegative spondyloarthropathy exhibit distinct intestinal and rheumatological findings.
  • Indeterminate colitis or lymphoid nodular hyperplasia were common, suggesting these patients may be at risk for developing IBD.
  • Early identification of these features is crucial for monitoring and potential early intervention in pediatric IBD.
Abstract

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