Abstract
Endoscopic retrograde cholangiopancreatography was performed to 1500 patients, in those including 15 cases of carcinoma of the gall bladder and 29 cases of carcin-oma of the extrahepatic bile duct which were proved by operation or autopsy. Endoscopic retrograde cholangiography (E. R. C.) was succeeded in 13 cases with carcinoma of the gallbladder and opacified areas of those were as follows ; gallbladder and bile duct in 4, cystic duct and bile duct in 1 and bile duct alone in 8. In 5 cases of them the carcinoma of the gallbladder was easily diagnosed for the appearances of distinct filling defect in the gallbladder and in the remaining 8 cases appearances of irregular stenosis or obstruction at triangular portion of the bile duct indicated the diagnosis of malignancy in the biliary tract. E. R. C. was successfu lly performed to all of the 29 cases of carcinoma of the extrahepatic bile duct and correct preoperative diagnosis have been made to all cases with the exception of 2 cases which weve diagnosed as sclerosing cholangitis and choledocholithiasis. The appea-rances of E. R. C. were classified into stenotic type (11 cases) and obstructed type (18 cases). This paper emphasized that E. R. C. was the most valuable procedure for preoperative diagnosis of carcinoma of the extrahepatic bille duct.
