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Related Concept Videos

Inflammatory Bowel Disease IV: Clinical Manifestations01:20

Inflammatory Bowel Disease IV: Clinical Manifestations

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 disease course is marked...
Inflammatory Bowel Disease III: Diagnostic Studies and Management I-Nutritional Therapy01:30

Inflammatory Bowel Disease III: Diagnostic Studies and Management I-Nutritional Therapy

Various diagnostic tests are employed in the diagnostic process for Inflammatory Bowel Disease (IBD), particularly to differentiate between Crohn's disease and ulcerative colitis.
Diagnostic studies
A colonoscopy is the definitive screening test, distinguishing ulcerative colitis from other colon diseases with similar symptoms. During a colonoscopy test, inflamed mucosa with exudate ulcerations can be observed, and biopsies are taken to determine the histologic characteristics of the colonic...
Inflammatory Bowel Disease II: Crohn's Disease01:30

Inflammatory Bowel Disease II: Crohn's Disease

Introduction
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
Crohn's disease is a chronic, systemic inflammatory bowel disease (IBD) that predominantly affects the gastrointestinal tract. It is marked by transmural...
Inflammatory Bowel Disease I: Ulcerative Colitis01:27

Inflammatory Bowel Disease I: Ulcerative Colitis

Introduction
Inflammatory bowel disease, or IBD, encompasses a group of disorders characterized by chronic inflammation or ulceration of the gastrointestinal tract.
Risk Factors
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...
Inflammatory Bowel Disease I: Introduction01:26

Inflammatory Bowel Disease I: Introduction

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 “skip lesions” in which...
Inflammatory Bowel Disease II: Ulcerative Colitis01:20

Inflammatory Bowel Disease II: Ulcerative Colitis

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 BarrierA...

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Related Experiment Video

Updated: Jul 20, 2026

Investigating Intestinal Inflammation in DSS-induced Model of IBD
08:43

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Published on: February 1, 2012

Anemia in inflammatory bowel disease.

S Giannini1, C Martes

  • 13rd Unit of Internal Medicine, Department of Clinical Sciences, Luigi Sacco Hospital, University of Milan, Milan, Italy. giannini_simona@libero.it

Minerva Gastroenterologica E Dietologica
|September 15, 2006
PubMed
Summary

Anemia is a common complication of inflammatory bowel disease (IBD), affecting quality of life and increasing hospitalizations. Understanding its causes and types is key to effective treatment.

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Area of Science:

  • Gastroenterology
  • Hematology

Background:

  • Anemia is a frequent extraintestinal complication of inflammatory bowel disease (IBD), encompassing Crohn's disease and ulcerative colitis.
  • The prevalence of anemia in IBD varies widely (8.8%–73.7%), impacting patient well-being and healthcare utilization.

Purpose of the Study:

  • To provide a comprehensive review of anemia in IBD.
  • To discuss its pathogenesis, epidemiology, diagnosis, and therapeutic strategies based on recent evidence.

Main Methods:

  • Systematic review of existing literature on anemia in IBD.
  • Analysis of various pathogenetic factors contributing to anemia in IBD patients.

Main Results:

  • Anemia in IBD presents diverse prevalence rates depending on the specific condition (Crohn's disease vs. ulcerative colitis).
  • Key contributing factors include deficiencies (e.g., vitamin B12, folic acid), drug-induced bone marrow suppression, autoimmune hemolytic anemia, and myelodysplastic syndromes.
  • Iron deficiency anemia and anemia of chronic disease are the primary types observed in IBD.

Conclusions:

  • Accurate diagnosis of anemia in IBD is crucial for selecting appropriate treatments.
  • Complex cases with multiple pathogenetic factors may necessitate tailored therapeutic plans.