Abstract
Bile duct carcinoma, which produces clinically recognizable mucus, is defined as mucin producing bile duct carcinoma. A rare case of mucin producing cholangiocarcinoma with acute pancreatitis is reported.
A 64-year-old man was admitted to the hospital because of abdominal pain and vomiting. On admission, amylase was 4158U/L, and leukocytosis and abnormal liver function were noted. Acute pancreatitis was diagnosed. Ultrasonography visualized dilation of the common bile duct and swelling of the pancreas. Computed tomography showed a tumor shadow in the caudate lobe of the liver. On endoscopic retrograde cholangiopancreatography, a dilated common bile duct and mucus retention in the biliary tract were revealed. With aspiration biopsy cytology of the tumor, a diagnosis of cholam-giocarcinoma was made. Resection of the segment (S) 1+S4a+S5 was performed. Grossly, a 4×3cm gelatinous tumor was present at the caudate lobe. Histopathologically the liver tumor was mucinous adenocarcinoma of the intrahepatic bile duct and invaded the hilar bile duct. We considered that the acute pancreatitis might be caused by obstruction of the pancreatic duct due to mucin produced by the tumor. There have been no signs of recurrence nor pancreatitis, as of 3years after the operation.
