Aortoesophageal fistula as a fatal complication of esophageal perforation.

Aortoesophageal fistula is a very rare cause of upper gastrointestinal bleeding, however its interest lies in the high mortality rate associated with it. Due to this, early diagnosis and treatment of this entity is essential to increase survival. The typical symptoms known as the Chiari´s triad are only present in 45% of reported cases. We present the case of a patient with upper gastrointestinal bleeding due to an aortoesophageal fistula as well as the importance of endoscopic use for its differential diagnosis.