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Updated: Mar 28, 2026

Technical Aspects of the Mouse Aortocaval Fistula

Technical Aspects of the Mouse Aortocaval Fistula

Published on: July 11, 2013

Primary aorto-enteric fistula.

Andrew C Gordon¹, Mayank Agarwal¹

¹Croydon University Hospital, London, United Kingdom.

International Journal of Surgery Case Reports

|January 1, 2016

Summary

This summary is machine-generated.

Primary aorto-enteric fistula (PAEF) is a rare condition where the aorta erodes into the intestinal tract. Early recognition of a "herald" bleed is crucial for diagnosis and improved outcomes in patients with upper GI hemorrhage.

Keywords:

Aorto-duodenal fistula Gastrointestinal haemorrhage Retroperitoneal metastasis

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Area of Science:

Gastroenterology
Vascular Surgery
Oncology

Background:

Primary aorto-enteric fistula (PAEF) is a rare and life-threatening condition involving spontaneous erosion between the aorta and intestinal tract.
Unlike secondary AEF, which follow aortic surgery, primary AEF has a dismal prognosis due to low clinical suspicion and diagnostic challenges.

Purpose of the Study:

To review the literature on PAEF etiology.
To present a rare case of PAEF secondary to metastatic retroperitoneal carcinoma.

Main Methods:

Literature review of PAEF etiology.
Case report of a 59-year-old female with PAEF secondary to metastatic retroperitoneal carcinoma.

Main Results:

Identified gallstone erosion, pancreatic carcinoma, and duodenal diverticulum as potential etiologies.
Presented a unique case of PAEF secondary to metastatic retroperitoneal carcinoma, an extremely rare cause.

Conclusions:

PAEF requires high clinical suspicion, especially in cases of acute upper GI hemorrhage with no clear cause.
The presence of a 'herald' bleed may be a significant indicator for diagnosing PAEF.
Further research is needed due to limited literature on primary AEF compared to secondary AEF.