Perforation of the gallbladder into the abdominal wall: A rare manifestation of biliary disease

A 54-year-old man was admitted to our surgery department complaining of right upper quadrant abdominal pain. The working diagnosis of acute cholecystitis was based on the clinical picture, laboratory tests, and ultrasound findings. Because of the uncommon course of the disease, computed abdominal tomography was performed, showing multiple stones in the anterior abdominal wall. On surgery, the fistula, containing stones and pus connecting the gallbladder and the abdominal wall muscles, was found