Primary aortoenteric fistula: A case report and brief review of the literature

Dhairya A. Lakhani, Shantosh A. Sharma, Haneen Kutayni, Aneri B. Balar, Gary Marano, Daniel Martin

Research output: Contribution to journalArticlepeer-review


Aortoenteric fistula is a life-threatening emergency and is associated with high morbidity and mortality. Prompt surgical intervention before the aneurysm ruptures lowers the mortality rate to about 50%. Potential imaging mimics for aortoenteric fistula include retroperitoneal fibrosis, mycotic aortic aneurysm, and infectious aortitis. Secondary aortoenteric fistula has relative higher incidence compared to primary and is more common with open aortic repair versus endovascular stent graft repair. Ectopic gas in the aneurysm sac and extravasation of enteric contrast into the aneurysm sac is diagnostic for aortoenteric fistula. However, enteric contrast is not recommended for routine evaluation of aortoenteric because the aforementioned finding is extremely rare. More common imaging findings include bowel loop appearing adherent to aneurysm sac with associated inflammatory stranding and foci or ectopic gas within the aneurysm sac or interposed between the bowel and aneurysm sac. Here we present a case of 52-year-old male who presents with incidental primary aortoenteric fistula.

Original languageEnglish (US)
Pages (from-to)3549-3553
Number of pages5
JournalRadiology Case Reports
Issue number11
StatePublished - Nov 2021
Externally publishedYes


  • Acute aortic syndrome
  • Aortoenteric fistula
  • Axillobifemoral bypass

ASJC Scopus subject areas

  • Radiology Nuclear Medicine and imaging


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