Primary Aortoesophageal Fistula: Is a High Level of Suspicion Enough?

Authors

• Ana Sara Monteiro Serviço de Cirurgia, Centro Hospitalar Universitário do Algarve, Faro, Portugal; Serviço de Medicina Interna, Centro Hospitalar Universitário do Algarve, Faro, Portugal; Department of Biomedical Sciences and Medicine, University of Algarve, Faro, Portugal; Algarve Biomedical Center, Campus Gambelas, Faro, Portugal
• Rute Martins Serviço de Radiologia, Centro Hospitalar Universitário do Algarve, Faro, Portugal; Algarve Biomedical Center, Campus Gambelas, Faro, Portugal
• Catarina Martins da Cunha Serviço de Gastrenterologia, Centro Hospitalar Universitário do Algarve, Faro, Portugal; Algarve Biomedical Center, Campus Gambelas, Faro, Portugal
• Jorge Moleiro Serviço de Cirurgia, Centro Hospitalar Universitário do Algarve, Faro, Portugal; Algarve Biomedical Center, Campus Gambelas, Faro, Portugal
• Henrique Patrício Serviço de Radiologia, Centro Hospitalar Universitário do Algarve, Faro, Portugal; Algarve Biomedical Center, Campus Gambelas, Faro, Portugal

rutepaulomartins@gmail.com

Keywords

Abstract

Aortoenteric fistula (AEF) is a rare condition with a high mortality rate. AEFs are classified according to their primary and secondary causes, the former being less frequent. Primary AEFs occur in a native aorta and their causes include aneurysms, foreign bodies, tumours, radiotherapy and infection. The classic triad of aortoesophageal fistulas, a subtype of AEFs, are mid-thoracic pain and sentinel haemorrhage, followed by massive bleeding after a symptom-free interval.
We present the case of a 41-year-old male patient who presented in the emergency room after successive episodes of abundant haematemesis. He was hypovolemic, hypothermic and acidotic at presentation. His medical history included an emergency room visit the week before with chest pain but no relevant anomalies on work-up, active intravenous drug use and chronic hepatitis.
Esophagogastroduodenoscopy (EGD) showed a bulging ulcerated lesion suspicious for aortoesophageal fistula, confirmed by computed tomography (CT) angiography, which revealed a saccular aortic aneurysm with a bleeding aortoesophageal fistula. The patient underwent urgent thoracic endovascular aortic repair.
The sentinel chest pain, leucocytosis and CT findings hinted at the presence of a mycotic aneurysm, despite the negative blood cultures. It was most likely caused by a septic embolus due to the patient’s risk factors. While a high level of suspicion for aortoesophageal fistula is needed to prompt a fast diagnosis, EGD and CT findings were crucial to establish it and allow a life-saving intervention. We conclude that chest pain cannot be disregarded in a patient aged 41 years with multiple comorbidities, despite normal work-up, to prevent a fatal outcome.