A CASE OF PRIM:ARY CARCINOM:A IN THE CYSTIC DUCT D:ETECTEID BY INTRADUCTAL ULTRASONOGRAPHY (IDUS)

Abstract

The patient, 6S years old, vvas admitted to our hospital complaining of epigastric painand icterus. Percutaneous transhepatic cholangzoscopy(PTCS)showed papillary tumor illthe bile duct. Biopsy specimen through PTCS revealed adenocarcinoma. Intraductalultrasonography(IDUS)and endoscopic ultrasonography(EUS)demonstrated a tumor inthe cystic duct protruding into the common bide duct. In addition, IDUS showed that thetumor did not invade into the common bile duct, whereas EU5 could only demonstrate mainpart of the tumor existing in the cystic duct and other part in the common bile duct withno evidence of invasion. IDUS was useful in the diagnosis of carcinoma occuring in the cystic duct.