http://www.gastro.org/public/ercp.html
"ERCP can be helpful when there is a blockage of the bile ducts by gallstones, tumors, scarring or other conditions that cause obstruction or narrowing (stricture) of the ducts. Similarly, blockage of the pancreatic ducts from stones, tumors, or stricture can also be evaluated or treated by ERCP, which is useful in assessing causes of pancreatitis (inflammation of the pancreas)."
1.) What Can You Expect During an ERCP?
2.) What are the Possible Complications from an ERCP?
3.) What Can You Expect after Your ERCP?
4.) HOW ERCP WORKS