Related Experiment Video
Updated: Jun 16, 2026

Multimodality Diagnosis of Mesenteric Ischemia
Published on: July 21, 2023
Case report: aortoenteric fistula presenting as repeated hematochezia
Michael K Doney1, Gary M Vilke
1Department of Emergency Medicine, University of California, San Diego Medical Center, San Diego, California, USA.
Background:
Aortoenteric fistula (AEF) is a rare but life-threatening condition in which expedient diagnosis is often difficult. It arises from erosion of a segment of aorta, usually an abdominal aortic aneurysm, into an adjacent portion of the gastrointestinal tract or between a vascular graft of the aorta and an adjacent portion of the gastrointestinal tract. It can present as life-threatening upper or lower gastrointestinal bleeding and is a surgical emergency that requires rapid assessment, emergency resuscitation, and definitive treatment.
Case Report:
To present the case of an 87-year-old man diagnosed with AEF in the emergency department. A review of the literature follows the case report.
Conclusions:
Aortoenteric fistula is a rare diagnosis that can cause sudden life-threatening gastrointestinal bleeding.
Related Concept Videos
Esophageal 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 abuse, or...
Intestinal Obstruction II: Pathophysiology
Appendicitis
Esophageal Varices-I: Introduction
Esophageal Perforation-II: Clinical Manifestations and Management
Clinical Manifestations:
Assessment of the Rectum and Anus
Rectal Inspection
Begin by inspecting the perianal and anal areas for color, texture, rashes,...