Related Experiment Video
Updated: Mar 12, 2026
Multimodality Diagnosis of Mesenteric Ischemia
Published on: July 21, 2023
Colonic ischemia: usual and unusual presentations and their management
Ayah Oglat1, Eamonn M M Quigley
1Division of Gastroenterology and Hepatology, Lynda K and David M Underwood Center for Digestive Disorders, Houston Methodist Hospital and Weill Cornell Medical College, Houston, Texas, USA.
Insights
Colonic ischemia, a common cause of lower GI bleeding, often results from reduced blood flow rather than blockages. Most cases are reversible with supportive care, showing excellent prognosis for survival and recurrence.
Area of Science:
- Gastroenterology
- Vascular Medicine
- Internal Medicine
Background:
- Colonic ischemia is the most frequent form of intestinal vascular compromise.
- Unlike small intestine ischemia, it typically involves global reduction in colonic blood flow without occlusive lesions.
- It is a common cause of lower abdominal pain and hemorrhage, particularly in the elderly.
Purpose of the Study:
- To update knowledge on the epidemiology of colonic ischemia.
- To review the pathophysiology, clinical presentation, and management strategies.
- To highlight diagnostic approaches and prognostic factors.
Main Methods:
- Literature review of recent findings on colonic ischemia.
- Analysis of risk factors, clinical presentation, and diagnostic imaging.
- Evaluation of current management and prognosis.
Main Results:
- Colonic ischemia is increasingly recognized, often linked to hypoperfusion events.
- Risk factors, clinical context, and demographics are crucial for suspicion.
- Computerized tomography and colonoscopy with biopsy aid diagnosis.
Conclusions:
- Most colonic ischemia cases are reversible with benign clinical courses.
- Management is primarily supportive and noninterventional.
- Prognosis for recurrence and survival is generally excellent.
Purpose Of Review:
To provide an update on the epidemiology, pathophysiology, clinical presentation, and management of colonic ischemia.
Recent Findings:
Formerly regarded as a rare cause of lower gastrointestinal hemorrhage, colonic ischemia is now recognized to be the most common manifestation of intestinal vascular compromise. In contrast to ischemic events in the small intestine wherein thrombotic and embolic events predominate, colonic ischemia typically results from a global reduction in blood flow to the colon and no occlusive lesion(s) are evident. Several risk factors for colonic ischemia have been identified and, together with an appropriate clinical presentation and patient demographics, create a context in which the clinician should have a high level of suspicion for its presence. Imaging with computerized tomography, in particular, may be highly supportive of the diagnosis, which where appropriate can be confirmed by colonoscopy and colonic biopsy. For most patients, management is supportive and noninterventional, and the prognosis for recurrence and survival are excellent.
Summary:
Colonic ischemia is a common cause of lower abdominal pain and hemorrhage among the elderly typically occurring in the aftermath of an event which led to hypoperfusion of the colon. For most affected individuals the ischemia is reversible and clinical course benign.
Related Concept Videos
01:21Inflammatory Bowel Disease V: Surgical Management
Here are some common surgical interventions for IBD:
01:27Inflammatory 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...
01:17Chronic 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...
01:30Inflammatory Bowel Disease III: Diagnostic Studies and Management I-Nutritional Therapy
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...
01:28Esophageal Varices-II: Clinical Features and Management
In the initial assessment, a thorough review of the patient's medical history is vital to identify risk factors such as liver disease, alcohol...
01:26Imaging Studies III: Gastrointestinal Motility Studies and Virtual Colonoscopy
Radionuclide Testing
Radionuclide testing is a sophisticated medical technique for assessing gastrointestinal motility. It focuses on gastric emptying and colonic transit time. Radioactive markers track the movement of food through the digestive system, providing insights into gastrointestinal disorders.
In gastric emptying studies, a meal's liquid and...