Abstract
Correlations of the pancreatic duct image and the patholog calf indings were studied on the differeutal diaguois between pancreatic cancer and chronic pancreatitis. Eight cases of pancreatic cancer and chronic pancreatitis were examined six of which showed the constricted main pancreatic duct on image. The results are as f ollowr : Chronic pancreatitis which showed constricted pancreatic duct is relatively short in disease period. When monocentric change at the constricted part on the pancreatic duct image is found, pancreatic cancer shoud be considered first. The charactristics of the pan-creatic duct image with monocentric change are: (1) no remarkable change is recognized in pancereatic duct image at the papillary side of the constricted part; (2) no "hardness" is recog-nized on the image of the main pancreatic duct at the constricted part; and (3) transitional image which indicates multiple change is recognized in the image of pancreatic duct at the tail side of the constricted part.
