Gallstone pancreatitis secondary to a pathological cystic duct stump in a setting of chronic pain syndrome: a diagnostic dilemma

A 32-year-old woman presented with epigastric pain. She was a patient with chronic pain syndrome and had visited the emergency department several times over the past year. She did not drink alcohol. She had a laparoscopic cholecystectomy for gallstone pancreatitis 4 years ago. Her lipase was 2020 with normal bilirubin. MR cholangiopancreatography revealed a cystic structure resembling a gallbladder in the gallbladder fossa. This was in connection with the biliary system. The structure also contained stones. A review of the histology did confirm the gallbladder had been removed. She proceeded to have a laparoscopic re-cholecystectomy and made an unremarkable recovery.