Hydatid Cholecystitis: A Rare and Unexpected Diagnosis Mimicking Acute Cholecystitis

Hydatidosis is a parasitic zoonosis caused by the larval form of Echinococcus granulosus, endemic in the Mediterranean basin, the Middle East, and South America. [1] While this pathology primarily affects the liver (50-70%) and lungs (20-30%), [2] vesicular localization is exceptionally rare, representing merely 0.1% of all hydatid localizations. [3] This rarity significantly complicates preoperative diagnosis, often leading to intraoperative discovery. We report the case of a 39-year-old male patient with a history of hepatic hydatid cyst (type IV, segment VII) treated surgically in 2019 by resection of the protruding dome. The patient presented two and a half years later with right hypochondrial pain and fever. Clinical examination revealed an anicteric patient with right hypochondrium tenderness and fever.