ERCP, or Endoscopic Retrograde CholangioPancreatigraphy, is a procedure used by Gastroenterology Associates to examine the ducts of the liver, gallbladder and pancreas. This procedure is used to diagnose diseases of the pancreas, bile ducts, liver and gallbladder.  An endoscope is passed through the patient’s mouth, esophagus and stomach into the duodenum, which is the first part of the small intestine. Contrast material (dye) is then injected gently into the ducts and X-rays are taken. The contrast material permits much more detailed x-rays for the physicians to review.