Endoscopic retrograde cholangiopancreatography.
D001660:Biliary Tract Diseases / Q000175:diagnosis*; D002758:Cholangiography; D004724:Endoscopy; D006801:Humans; D010182:Pancreatic Diseases / Q000175:diagnosis*; D010190:Pancreatic Neoplasms / Q000175:diagnosis; D014463:Ultrasonography