hepatocholangiostomy

Creation of an opening into the common bile duct to establish drainage.

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hep·a·to·cho·lan·gi·os·to·my (hep″ə-to-ko-lan″je-osґtə-me) the operation of establishing drainage of the hepatic duct either through the abdominal wall (external h.) or into some part of the gastrointestinal tract (internal h.).