An Unusual Presentation of Cholecystoduodenal Fistula: Massive Upper Gastrointestinal Bleeding

Background: Cholecystodoudenal fistula (CDF) as a cause of severe upper gastrointestinal bleeding (UGIB) is a rare event that has few reported cases. Methods: Here we discuss the case of an 86-year-old male who presented with UGIB due to a CDF. Results: The patient was diagnosed promptly and underwent successful emergent operation. Discussion and Conclusion: The following is a discussion of the case, accompanied by a brief review of enterobiliary fistulas. Physicians involved in the management of patients with UGIB should entertain the possibility of a biliary-enteric fistula as a possible cause, particularly in patients with risk factors for gallstone disease. Computed Tomography (CT) might enable prompt diagnosis.