A 60-year-old Middle Eastern male patient with a past medical history of benign prostatic hyperplasia, hypertension, gastroesophageal reflux disease and type 2 diabetes mellitus presented to the emergency department complaining of crampy lower abdominal pain associated with an unintentional 40 pounds weight loss over 4 months. A magnetic resonance imaging (MRI) of the abdomen with intravenous contrast demonstrated a heterogeneous solid pancreatic uncinate mass (3.9 × 3.2 cm) with a duplicated common bile duct ().\nA subsequent endoscopic ultrasound (EUS) confirmed a large heterogeneous hypoechoic mass with irregular borders and cystic areas in the uncinate process of the pancreas. The distal CBD appeared mildly dilated with two extrahepatic bile ducts consistent with type II accessory common bile duct (ACBD). The accessory bile duct provided a conduit for the deposition of bile in the pancreatic head where it terminated. Subsequent inflammation progressed to metaplastic changes confirmed by a fine needle aspiration (FNA) via trangastric approach. The atypical cells of metaplasia found in the pancreatic head were confirmed to be pancreatic adenocarcinoma. Magnetic resonance cholangiopancreatography (MRCP) confirmed the above EUS findings along with multiple enhancing foci also present in the liver. A triple phase computerized tomography (CT) also re-demonstrated an ACBD () with multiple hypervascular hepatic lesions and a soft tissue mass in the pancreatic uncinate process () encasing the superior mesenteric artery (SMA). The patient was eventually discharged for further staging and subsequent chemotherapy at a different institution.
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.