# Delayed Diagnosis of a Giant Abdominal Aortic Aneurysm Complicating to Aortoenteric Fistula: A Case Report and Literature Review

## TL;DR

A man's delayed diagnosis of a large abdominal aortic aneurysm led to a life-threatening complication, highlighting the need for early imaging and clinical awareness.

## Contribution

This case emphasizes the importance of early detection and multidisciplinary care in managing complex aortic aneurysms.

## Key findings

- Delayed diagnosis of AAA can lead to aortoenteric fistula and severe complications.
- Early vascular imaging and clinical suspicion are critical for better outcomes in AAA cases.
- Multidisciplinary care and targeted antibiotic therapy are essential in managing complex AAA cases.

## Abstract

A 53‐year‐old man with chronic back pain and systemic symptoms was diagnosed with a massive abdominal aortic aneurysm (AAA) and aortoenteric fistula (AEF), which can cause severe gastrointestinal bleeding and potentially fatal side effects. In patients with chronic back pain and systemic symptoms, this case emphasizes the value of early imaging and a high level of clinical suspicion for AAA. AEF and rupture are two major consequences of a delayed diagnosis. Improving results in such complicated vascular presentations requires prompt management and careful postoperative surveillance. The case highlights the importance of early imaging and clinical suspicion for AAA, as delayed diagnosis can lead to complications like AEF and rupture.

Atypical presentation with fever and chronic back pain led to delayed diagnosis.Graft infection with Gram‐negative organisms required combined surgical and prolonged targeted antibiotic therapy.Early vascular imaging and multidisciplinary care are critical to improving outcomes in complex AAA cases, particularly in resource‐limited settings.

Atypical presentation with fever and chronic back pain led to delayed diagnosis.

Graft infection with Gram‐negative organisms required combined surgical and prolonged targeted antibiotic therapy.

Early vascular imaging and multidisciplinary care are critical to improving outcomes in complex AAA cases, particularly in resource‐limited settings.