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Differentiation of extrahepatic and intrahepatic obstructive jaundice.

THE DIFFERENTIATION between extrahepatic and intrahepatic obstructive jaundice is readily made in 85 to 95 percent of cases. In the remaining 5 to 15 percent accurate diagnosis cannot be made on the usual criteria, and careful evaluation, including history, physical findings, biochemical and radiologic procedures, does not lead to a definitive diagnosis. It is in this group that oral and intravenous cholecystography rarely helps due to inability to adequately visualize the gall bladder and the