Aortodigestive Fistula Presenting as Back Pain: A Rare Case of Spondylodiscitis Due to a Digestive Pathogen

Aortodigestive fistulae (ADF) are rare but potentially fatal conditions characterized by an abnormal communication between the aorta and the gastrointestinal tract. These fistulae can lead to massive gastrointestinal hemorrhage and carry a high mortality rate if not promptly diagnosed and managed. We report a unique case of an aortodigestive fistula initially manifesting as isolated back pain, later diagnosed as spondylodiscitis caused by a digestive pathogen. This case underscores the diagnostic challenges of ADF and highlights the critical importance of early recognition and timely intervention.