Choledochal cyst: a report of two cases.

Two cases of choledochal cyst in two female Saudi paediatric patients seen in the last five years are presented. Both presented with recurrent abdominal pain of long duration with no associated palpable abdominal mass or jaundice. They are of Type I, classification showing cystic dilation of the common bile duct. Findings on sonography and computed tomography (CT) included a cystic mass in the porta hepatis separate from the gallbladder, non-dilation of intra-hepatic bile ducts and the presence of stones in the cyst in the older child. Both patients underwent operation with intraoperative cholangiography which demonstrated anomalous junction of the pancreatic duct with the common bile duct--a factor implicated in the aetiology of the disease condition.