A case diagnosed as abnormality of confluence of pancreaticobiliary duct triggered by gall bladder lesion: A case report

Abstract

The patient, a 31-year-old woman, was diagnosed as having gallbladder wall thickening on an abdominal ultrasonography performed at a regular health checkup in 20XX and was subsequently referred to our department for examination. Ultrasonic endoscopy findings indicated gallbladder wall thickening around the entire circumference and polyp-like protruding lesions. Findings also revealed merging of the pancreas and bile duct outside of the duodenal wall. Endoscopic retrograde cholangiopancreatography revealed that the common bile duct diameter was 7mm and that the shared duct was 30mm, with the main pancreatic duct imaged from the intrapancreatic bile duct. Therefore, a diagnosis of malfusion of the pancreaticobiliary ducts (non-bile duct dilatation type) was made. As the possibility of early bile duct cancer could not be denied, laparoscopic cholecystectomy was performed. Pathological examination revealed multiple hyperplastic polyps with no findings suggestive of malignancy. Our experience suggests that if polypoid gallbladder lesions are observed in a young patient, careful testing should be implemented with the possibility of malfusion of the pancreaticobiliary ducts in mind.