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Related Experiment Videos

[Pathomorphology of ulcerative colitis].

Yoichi Ajioka1, Ken Nishikura, Gen Watanabe

  • 1Division of Molecular and Functional Pathology, Graduate School of Medical and Dental Sciences, Niigata University.

Nihon Rinsho. Japanese Journal of Clinical Medicine
|May 11, 2005
PubMed
Summary

This study details the microscopic and macroscopic features of ulcerative colitis (UC) during active and remission phases. Understanding these distinct inflammatory patterns aids in accurate diagnosis and management of UC.

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Area of Science:

  • Gastroenterology and Pathology
  • Inflammatory Bowel Disease (IBD) research

Context:

  • Ulcerative colitis (UC) diagnosis relies on characteristic histopathological findings.
  • Distinguishing between active and remission phases of UC is crucial for treatment decisions.

Purpose:

  • To summarize the microscopic and macroscopic appearances of ulcerative colitis (UC) based on its inflammatory phase.
  • To correlate histological findings with gross pathological changes in UC.

Summary:

  • Active UC shows diffuse lymphoplasmacytic infiltration and basal plasmacytosis, potentially extending into the submucosa, leading to toxic megacolon.
  • Remission phase UC exhibits reduced inflammation with recovered goblet cell mucus, but residual signs like crypt distortion and metaplasia persist.
  • Macroscopic UC features, including erythematous, spongy, granular, pseudopolyp, ulcerative, and fulminant types, reflect underlying microscopic inflammation and ischemia.

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Impact:

  • Provides a comprehensive guide for pathologists and clinicians in identifying UC activity and chronicity.
  • Enhances understanding of UC pathogenesis by linking microscopic inflammation to macroscopic presentation.
  • Facilitates more precise grading and staging of UC, improving patient management strategies.