Tumors of the pancreas often block the duct that releases bile into the intestine, called the common bile duct. In turn, bilirubin builds up in the blood stream and causes a condition called jaundice.
If you have jaundice, your skin and eyes will turn yellow and you may experience intense itchiness. There are a lot of potential causes of jaundice that are not cancer, but jaundice should always be checked out by a doctor. The underlying cause must be treated in order to resolve it.