Aortoesophageal Fistula Secondary to Esophageal Diverticulum Resulting in Sudden Unexpected Death

Aortoesophageal fistula (AEF) is a rarely encountered clinical outcome that is often fatal. It is most commonly a postoperative complication of vascular surgery (secondary AEF). Reported primary causes of AEF include aortic aneurysm, atherosclerosis, infection, foreign objects, achalasia with megaesophagus, gastrointestinal malignancy, and radiotherapy. Aortoesophageal fistula is often not a top diagnostic consideration for clinicians or pathologists and has the potential to be overlooked. This report describes a rare case of AEF secondary to an esophageal traction diverticulum and associated abscess that resulted in the sudden unexpected death of a 78-year-old male. Aortoesophageal fistula is an important consideration for pathologists and requires careful consideration in the postmortem setting.