Fig. 1From: A case of intraductal papillary neoplasm of the bile duct that developed 38 years after choledochoduodenostomy with invasive adenocarcinoma and lymph node metastasisPreoperative ultrasonography. Abdominal ultrasonography showed a hyperechoic lesion, 40 mm in diameter, located in the left hepatic bile duct (white arrow), and extended dilation of the distal left intrahepatic bile duct (yellow arrow)Back to article page