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Related Concept Videos

Inflammatory Bowel Disease I: Ulcerative Colitis01:27

Inflammatory Bowel Disease I: Ulcerative Colitis

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Introduction
Inflammatory bowel disease, or IBD, encompasses a group of disorders characterized by chronic inflammation or ulceration of the gastrointestinal tract.
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The exact cause of IBD remains unclear, although it is believed to be due to a mix of genetic, environmental, microbial, and immune factors. Genetic factors are significant in determining susceptibility to IBD, with family history being a critical risk factor. Individuals with a first-degree relative who has IBD are at...
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Inflammatory Bowel Disease II: Crohn's Disease01:30

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Inflammatory bowel disease, commonly known as IBD, refers to a collection of disorders that lead to persistent inflammation of the gastrointestinal tract. The two types of IBD are ulcerative colitis, which impacts the colon, and Crohn's disease, which can involve any part of the gastrointestinal segment.
Crohn's disease
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Inflammatory Bowel Disease I: Introduction01:26

Inflammatory Bowel Disease I: Introduction

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Inflammatory bowel disease is a group of chronic disorders marked by recurrent inflammation of the gastrointestinal tract due to an abnormal immune response against gut microflora. This leads to tissue damage. The two main forms are Crohn’s disease and ulcerative colitis.Crohn’s DiseaseCrohn’s disease is a relapsing inflammatory disorder that can affect any part of the GI tract, from the mouth to the anus. It involves all layers of the bowel wall (transmural) and shows...
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Inflammatory Bowel Disease II: Ulcerative Colitis01:20

Inflammatory Bowel Disease II: Ulcerative Colitis

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Ulcerative colitis is a chronic inflammatory disorder of the colon characterized by continuous mucosal inflammation that typically begins in the rectum and extends proximally in a uniform pattern. Its pathogenesis involves a complex interplay of genetic predisposition, immune dysregulation, and environmental influences. These factors converge to impair the colon’s epithelial defenses and promote an exaggerated inflammatory response against luminal contents.Breakdown of the Mucosal...
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Inflammatory Bowel Disease III: Crohn's Disease01:25

Inflammatory Bowel Disease III: Crohn's Disease

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Crohn’s disease is a chronic, relapsing form of inflammatory bowel disease characterized by segmental, transmural inflammation that can affect any part of the gastrointestinal tract. Its pathogenesis arises from a combination of genetic susceptibility, environmental exposures, epithelial barrier dysfunction, and immune dysregulation. Together, these factors lead to an exaggerated immune response against components of the gut microbiome.Genetic and Environmental InfluencesMultiple genetic...
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Inflammatory Bowel Disease IV: Clinical Manifestations01:20

Inflammatory Bowel Disease IV: Clinical Manifestations

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Inflammatory bowel disease (IBD) encompasses two major chronic disorders—ulcerative colitis and Crohn’s disease—each characterized by relapsing episodes of gastrointestinal inflammation. Although they share certain clinical features, their patterns of involvement and manifestations differ in ways that aid diagnosis and guide management.Ulcerative ColitisUlcerative colitis is limited to the colon and rectum and involves continuous inflammation of the mucosal layer. The...
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Fluorescence-mediated Tomography for the Detection and Quantification of Macrophage-related Murine Intestinal Inflammation
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Microscopic activity in ulcerative colitis: what does it mean?

S A Riley1, V Mani, M J Goodman

  • 1Department of Medicine, University of Manchester, Hope Hospital, Salford.

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|February 1, 1991
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Summary
This summary is machine-generated.

Microscopic rectal inflammation, specifically acute inflammatory cell infiltrate, crypt abscesses, and mucin depletion, predicts relapse in ulcerative colitis (UC) patients. Chronic inflammation and architectural changes did not correlate with UC relapse.

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Area of Science:

  • Gastroenterology
  • Histopathology
  • Clinical Medicine

Background:

  • Ulcerative colitis (UC) is a chronic inflammatory bowel disease.
  • Predicting relapse in quiescent UC is crucial for patient management.
  • Microscopic features in rectal biopsies may offer prognostic insights.

Purpose of the Study:

  • To investigate the prognostic significance of microscopic rectal inflammation in patients with chronic quiescent ulcerative colitis.
  • To correlate specific histological findings with the rate of UC relapse over a 12-month period.

Main Methods:

  • A cohort of 82 patients with chronic quiescent UC underwent rectal biopsies at baseline.
  • Biopsies were independently assessed by two histopathologists for acute and chronic inflammatory activity, crypt architecture, mucin depletion, and epithelial breaches.
  • Patients were followed for 12 months to record relapse rates.

Main Results:

  • Acute inflammatory cell infiltrate (52% vs 25%, p=0.02), crypt abscesses (78% vs 27%, p<0.005), mucin depletion (56% vs <0.02), and epithelial breaches (75% vs 31%, p=0.1) were associated with higher relapse rates.
  • Chronic inflammatory cell infiltrate and crypt architectural irregularities did not correlate with relapse.
  • Histopathologist agreement for assessed features was high (94%).

Conclusions:

  • Acute inflammatory features in rectal biopsies are significant predictors of relapse in quiescent ulcerative colitis.
  • Histopathological assessment of rectal biopsies can aid in risk stratification for UC patients.
  • Further research may refine the use of these markers for personalized UC management.