| percutaneous transhepatic cholangiography | Contrast radiographic examination of biliary system performed by injection through a percutaneously placed needle inserted into an intrahepatic bile duct. (05 Mar 2000) |
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| sphincterotomy, transhepatic | Surgery of the smooth muscle sphincter of the hepatopancreatic ampulla to relieve blocked biliary or pancreatic ducts. (12 Dec 1998) |