radiograph imaging with contrast dye endoscopic procedure endoscopic retrograde cholangiopancreatography 2023-02-20T17:37:27Z ERCP A combined endoscopic and fluoroscopic procedure in which an upper endoscope is led into a second part of the duodenum, making it possible for passage of other tools via the major duodenal papilla into the biliary and pancreatic ducts. Contrast material may be injected in these ducts, allowing for radiologic visualization and therapeutic interventions when indicated.