A 35-year-old female presented to a local hospital with a 3-month history of intermittent abdominal pain. Initial abdominal ultrasonography revealed cystic dilatation of the extrahepatic bile duct. A suspicion of choledochal cyst was made and was referred for surgical management. Her past medical history was unremarkable. She weighed 83 kg and was 164 cm tall, with body mass index of 30.9 kg/m2. Apart from mild right upper quadrant tenderness, her physical examination was unremarkable. Laboratory tests including liver and renal function tests, serum and urine amylase levels were normal. A magnetic resonance cholangio-pancreatography (MRCP) done showed a cystic fusiform dilatation of the common bile duct (CBD) extending into the right and left hepatic ducts (). No PBM was observed. The MRCP findings suggested type Ic CC. Without any further imaging, patient was scheduled for complete cyst excision with cholecystectomy and hepaticoenterostomy surgery. At laparotomy, the CBD was found to be fusiformly dilated. Bile samples were taken from the cyst and the gallbladder (GB) for amylase level essays. The GB was dissected from the liver bed and the cystic duct opened into the midportion of the cyst. After careful dissected of the cyst from surrounding vascular structures, the distal part entering the head of pancreas was noticed to be unaffected (). The distal part was transected just at the level of the head of pancreas and samples were taken for frozen section. Dissection at the hepatic hilum revealed two separate dilated ducts originating from the confluence of the left and right hepatic ducts and both entering into the cyst (). The two ducts were transected just distal to their origin from hepatic confluence to avoid confusing them as true right and left hepatic ducts (). The hepatic confluence was then opened to expose the true left and right hepatic ducts (). The dilated portions of the both hepatic ducts were transected and samples were taken for frozen section. A right and left hepaticojejunostomy reconstruction was done. No intraoperative cholangiogram was performed. Frozen section results of both the distal and proximal surgical margins were negative for malignancy. The amylase levels of both the cyst and GB were 47 031 and 44 770 U/L, respectively (normal serum amylase level: 25–110 U/L). Patient was discharged on postoperative Day 6. She is well with no evidence of malignancy after 23 months of follow-up.
A 61-year-old man was admitted to our hospital because of abdominal discomfort since 3 days. He had been in good health without any previous medical history of note. About 23 years ago, he had undergone primary repair of bowel rupture. Physical examination did not show any abnormalities. Initial laboratory data showed elevated serum total bilirubin 1.48 mg/dL, serum aspartate aminotransferase 980 IU/L, serum alanine transaminase 274 IU/L, and serum C-reactive protein 10.8 mg/L. Serum amylase and lipase were within normal limits. Serum was negative for hepatitis B and C markers. Abdominal computed tomography (CT) scan showed multiple CBD stones with dilated bile duct and MPD. On esophagogastroduodenoscopy, the major papilla of Vater was not found in the second duodenal portion. It was finally located in the duodenal bulb (). Endoscopic retrograde cholangiopancreatography (ERCP) was successfully performed via cannulation of the ectopic opening in the duodenal bulb. Dilated CBD with multiple stones was directly visualized radiographically () by injecting contrast media via the orifice. The patient underwent dilatation of the papilla with a balloon catheter (CRE wire-guided balloon dilator 12 to 15 mm; Boston Scientific, Marlborough, MA, USA), and a basket was used to remove the stones (). He was discharged without complications after the procedure.