Related Experiment Video
Updated: Sep 14, 2025
08:51
Murine Appendectomy Model of Chronic Colitis Associated Colorectal Cancer by Precise Localization of Caecal Patch
Published on: August 24, 2019
10.1K
Appendectomy Is Not Associated With a Milder Clinical Course of Ulcerative Colitis: A Nationwide Danish
Anders Mark-Christensen1,2, Eskild Bendix Kristiansen1, Søren Laurberg3
1Department of Clinical Epidemiology, Aarhus University Hospital, Aarhus, Denmark.
Alimentary Pharmacology & Therapeutics
|July 21, 2025
Summary
Appendectomy did not lead to a milder course of ulcerative colitis (UC). Patients who had an appendectomy showed similar rates of biologic treatment initiation but higher hospitalization and colorectal resection rates.
Area of Science:
- Gastroenterology
- Colorectal Surgery
- Epidemiology
Background:
- The potential protective effect of appendectomy on ulcerative colitis (UC) course is debated.
- Understanding this association is crucial for clinical decision-making.
Purpose of the Study:
- To investigate the influence of appendectomy on the clinical course of ulcerative colitis (UC).
Main Methods:
- A nationwide cohort study in Denmark (1977-2017) identified UC patients.
- Appendectomy patients were matched with UC patients without appendectomy.
- UC-related hospitalizations, biologic initiation, and colorectal resections were compared.
Main Results:
- Appendectomy was associated with increased hospitalization rates, especially for normal appendix removal or appendicitis before UC diagnosis.
- Appendectomy for appendicitis after UC diagnosis increased colorectal resection rates years later.
- Biologic treatment initiation rates were similar between groups.
Conclusions:
- Appendectomy does not appear to confer a milder clinical course for ulcerative colitis (UC) patients.
- The timing and indication for appendectomy did not alter this overall finding.
Related Concept Videos
01:29Appendicitis-II: Diagnostic Studies and Management
145
Diagnosing and managing appendicitis requires a structured and comprehensive approach that spans from initial assessment to postoperative care. Here is an overview of the process:
Diagnosing Appendicitis
It requires a multifaceted approach, starting with a detailed physical examination to pinpoint the location and nature of the pain and identify any associated symptoms. Laboratory tests play a crucial role. A complete Blood Count (CBC) typically reveals leukocytosis (an increased number of...
Diagnosing Appendicitis
It requires a multifaceted approach, starting with a detailed physical examination to pinpoint the location and nature of the pain and identify any associated symptoms. Laboratory tests play a crucial role. A complete Blood Count (CBC) typically reveals leukocytosis (an increased number of...
145
01:22Appendicitis-I: Introduction
635
The appendix, a small, narrow, blind tube extending from the inferior part of the cecum, is widely regarded as a vestigial organ, having lost much of its original function through evolution. Despite its diminished role, the appendix can become inflamed, a condition known as appendicitis.
Etiology: Appendicitis can arise from various causes, primarily rooted in the obstruction of the appendix lumen. Factors contributing to this obstruction include fecal accumulation, lymphoid hyperplasia and, in...
Etiology: Appendicitis can arise from various causes, primarily rooted in the obstruction of the appendix lumen. Factors contributing to this obstruction include fecal accumulation, lymphoid hyperplasia and, in...
635
01:27Inflammatory Bowel Disease I: Ulcerative Colitis
329
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, 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...
329
01:21Inflammatory Bowel Disease V: Surgical Management
219
Surgical interventions for inflammatory bowel disease (IBD), which includes ulcerative colitis and Crohn's disease, are essential in managing symptoms and addressing complications. The selection of surgical procedures is contingent upon the specific conditions and complications that stem from these illnesses.
Here are some common surgical interventions for IBD:
Here are some common surgical interventions for IBD:
219
01:30Inflammatory Bowel Disease II: Crohn's Disease
390
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...
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...
390
01:29Drugs for Treatment of Ulcerative Colitis in IBD
239
Ulcerative colitis is a chronic inflammatory condition primarily affecting the colon and rectum. The primary drugs used in the treatment of ulcerative colitis are aminosalicylates. They exhibit anti-inflammatory and immunosuppressive properties. They modulate inflammatory mediators and inhibit the activity of nuclear factor κB (NF-κB). Aminosalicylates also reduce inflammation by inhibiting prostaglandin and leukotriene production and decreasing neutrophil chemotaxis and superoxide...
239