Related Experiment Video
Updated: Oct 1, 2025

Murine Distal Colostomy, A Novel Model of Diversion Colitis in C57BL/6 Mice
Published on: July 12, 2018
A Case of Pseudomembranous Colitis of Unknown Etiology
Ariana R Tagliaferri1, Kelsey Murray2, Patrick Michael1
1Internal Medicine, St. Joseph's University Medical Center, Paterson, USA.
Abstract:
Pseudomembranous colitis (PC) is a nonspecific bowel injury resulting from decreased oxygenation, endothelial damage, and impaired blood flow to the mucosa. Although the most well-known cause of PC is Clostridium difficile (C. difficile), several diseases and medications can cause or predispose individuals to PC, such as microscopic colitis, infectious organisms, inflammatory conditions, nonsteroidal anti-inflammatory drugs, and chemotherapy agents. Here, we present the case of a patient who completed treatment for C. difficile infection but developed worsening PC of unknown etiology.
Insights
Pseudomembranous colitis (PC) is a bowel injury linked to reduced oxygen and blood flow. This case highlights a patient with worsening PC after C. difficile treatment, suggesting unknown causes beyond typical triggers.
Area of Science:
- Gastroenterology
- Pathology
Background:
- Pseudomembranous colitis (PC) is characterized by bowel injury due to hypoxia, endothelial damage, and reduced mucosal blood flow.
- While Clostridium difficile (C. difficile) is the primary cause, other factors include microscopic colitis, infections, inflammatory conditions, NSAIDs, and chemotherapy.
Observation:
- A patient completed C. difficile infection treatment.
- The patient subsequently developed worsening pseudomembranous colitis.
Findings:
- The etiology of the patient's worsening PC remained unknown despite prior C. difficile treatment.
- This case suggests potential non-C. difficile related causes or complex interactions in PC development.
Implications:
- Further investigation is needed to identify the unknown cause of PC in this patient.
- This case underscores the importance of considering diverse etiologies for PC, even after successful treatment of C. difficile.
More Related Videos
Related Concept Videos
Inflammatory Bowel Disease I: Ulcerative Colitis
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...
Chronic Bowel Disorders: Introduction
Irritable Bowel Syndrome (IBS) is a common disorder affecting the gastrointestinal tract. The distinctive feature is recurrent abdominal pain associated with altered bowel movements, manifesting as constipation, diarrhea, or fluctuating between both. The...
Gastritis-II: Pathophysiology
In acute gastritis, the gastric mucosa becomes swollen and red and undergoes superficial erosion. Superficial ulceration may lead to bleeding.
In chronic gastritis, persistent or repeated insults lead to chronic inflammatory changes and, eventually, thinning or atrophy of the gastric tissue.
Gastritis can stem from various causes, each...
Inflammatory Bowel Disease II: Crohn's Disease
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...
Peptic Ulcer Disease II: Pathophysiology
Damaging agents such as Helicobacter pylori, gastric acid, pepsin, and nonsteroidal anti-inflammatory drugs (NSAIDs) can weaken the mucosal defense, allowing hydrogen ions to infiltrate back and harm epithelial cells.
Irritable Bowel Syndrome II: Clinical Features and Diagnostic Evaluation
Irritable Bowel Syndrome (IBS) is classified into subtypes based on the predominant bowel habits as determined by the Bristol Stool Form Scale (BSFS). The subtypes are:

