, , PHP, or ERCP, means imaging with the direction opposite from the bile ducts and pancreas by endoscopic. Words the opposite direction, since it is used often for imaging the X-a contrast agent through the gut, or blood enter the body and work, but the bile ducts in the body, originate glands within the pancreas and gall bladder start to within the duodenum are imported. In the wake of the doctor to the help of endoscopy and after getting into the gut, and get to the range the ducts in the duodenum and the end of the stomach, inside the bile duct and contrast medium injected.