Endoscopic retrograde cholangiopancreatography. Definition

Medical Definition: Endoscopic retrograde cholangiopancreatography

A procedure that uses an endoscope to examine and x-ray the pancreatic duct, hepatic duct, common bile duct, duodenal papilla, and gallbladder. An endoscope is a thin, tube with a light and a lens for viewing. The endoscope is inserted through the mouth to the first segment of small intestine (duodenum). A smaller tube (catheter) is then inserted through the endoscope into the bile ducts and pancreatic ducts. A dye is injected through the catheter into the ducts and an x-ray is taken. Also called ERCP.

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