Retained gallstone as a rare cause of recurrent fistula in the scar after laparoscopic cholecystectomy

Thanks to the use of an extensive spectrum of diagnostic methods and at the same time thinking about the rare causes of a recurrent purulent collection with a fistula, we purposefully searched for an infectious source. Only perioperative radiography with injection of contrast material identified the presence of a retained gallstone. It was possible to extirpate it from the space between the intercostal muscles and the peritoneum, thereby relieving the patient of her problems.