Common bile duct stump stones and recurrent acute pancreatitis after Roux-en-Y choledochojejunostomy in a child: A case report.

Background: Pancreaticobiliary maljunction (PBM) is a rare congenital abnormality in pancreaticobiliary duct development. PBM is commonly found in children, and it often leads to acute pancreatitis and other diseases as a result of pancreaticobiliary reflux. Roux-en-Y choledochojejunostomy is a common surgical method for the treatment of PBM, but there are several associated complications that may occur after this operation.

Case summary: The patient, a 12-year-old female, was hospitalized nearly 20 times in 2021 for recurrent acute pancreatitis. In 2022, she was diagnosed with PBM and underwent laparoscopic common bile duct resection and Roux-en-Y choledochojejunostomy in a tertiary hospital. In the first year after surgery, the patient had more than 10 recurrent acute pancreatitis episodes. After undergoing abdominal computed tomography and other examinations, she was diagnosed with "residual bile duct stones and recurrent acute pancreatitis". On January 30, 2024, the patient was admitted to our hospital due to recurrent upper abdominal pain and was cured through endoscopic retrograde cholangiopancreatography.

Conclusion: This article reports a case of a child with distal residual common bile duct stones and recurrent acute pancreatitis after Roux-en-Y choledochojejunostomy for PBM. The patient was cured through endoscopic retrograde cholangiopancreatography.