from a retrospective review , it became apparent that early diagnosis can be obtained from the following : 1 ) detection of a hyperechoic mass in the liver parenchyma during abdominal ultrasonography , 2 ) a scintigraphic defect near the hilum , 3 ) filling defects or obliteration of intrahepatic ducts in ercp or ptc , 4 ) gross appearance of the liver during surgery revealed a nodular tumor mass or an atrophic , fibrotic liver , and 5 ) intraoperative choledochoscopic findings which showed an intraluminal tumor or infiltrative lesion .
C0577559
mass
C0027651
tumor