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Related Experiment Videos

[Indeterminate colitis (nonspecific inflammatory bowel disease)].

M Micev1

  • 1Sluzba za patohistologiju Institut za bolesti digestivnog sistema KCS, Beograd.

Acta Chirurgica Iugoslavica
|August 23, 2000
PubMed
Summary

Indeterminate inflammatory bowel disease (IIBD) presents diagnostic challenges, often overlapping with ulcerative colitis or Crohn's disease. Further clinical and histopathological evaluation may reclassify many IIBD cases over time.

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Area of Science:

  • Gastroenterology and Hepatology
  • Inflammatory Bowel Disease (IBD) research
  • Diagnostic challenges in colonic diseases

Context:

  • Inflammatory bowel disease (IBD) encompasses ulcerative colitis (UC) and Crohn's disease (CD), but a significant subset of cases remains diagnostically challenging.
  • Indeterminate inflammatory bowel disease (IIBD) is a diagnostic category for over 10% of IBD cases where features overlap or are insufficient to definitively diagnose UC or CD.
  • IIBD diagnosis is based on overlapping features in acute fulminant colitis or chronic cases lacking clear markers, or when standard diagnostic workups are inconclusive.

Purpose:

  • To define the diagnostic criteria and challenges associated with indeterminate inflammatory bowel disease (IIBD).
  • To explore the natural history and potential reclassification of IIBD cases into ulcerative colitis or Crohn's disease over a median follow-up of 10 years.

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  • To discuss the genetic and etiopathogenetic basis contributing to the heterogeneity observed in IBD presentations.

    • Summary:

    • IIBD is characterized by overlapping or insufficient features of UC or CD, or inconclusive diagnostic examinations.
    • A substantial proportion (20-75%) of IIBD cases may be reclassified as UC (up to 40%) or CD (up to 25%) with long-term follow-up, aided by specific markers like ileal/perianal disease or granulomatous inflammation.
    • While IIBD lacks distinct signs, certain presentations, particularly in young adults with transmural inflammation and deep ulcerations, carry risks of relapse and complications, with poorer surgical outcomes compared to UC.

    Impact:

    • Highlights the dynamic nature of IBD diagnosis, emphasizing the need for long-term monitoring and re-evaluation.
    • Informs clinical practice regarding the management and prognosis of patients with indeterminate inflammatory bowel disease.
    • Underscores the importance of comprehensive diagnostic approaches and further research into the underlying mechanisms of IBD heterogeneity.