I too have atrophy of the pancreas due to a rare condition called a pancreas divism with severe chronic pancreatitis. Everything you are describing is chronic pancreatitis and I think you need an ERCP because a lot of illnesses of the pancreas, like mine, can only be diagnosed by an ERCP and go to a Pancreatic Specialist (AKA a Billiary expert), that your gastro doc can refer you to one. I went through multiple stent placements and removals before needing a Whipple with an Islet Auto Transplant November 3rd 2010 at UAB in Birmingham, Alabama. I was sick from 06 to 09 when they, Baylor hospital in Dallas, finally figured it after three years of test, after test, after tests, they figured it out when I was dying and decided to do an ERCP and finally figured out what was wrong with me because I happen to have two small pancreatic ducts, where the average person has one main duct, which does not show up on ANY scan,ultrasound, nothing and both ducts were shut that they could not even get stents into the ducts that my pancreas was about to rupture, so they had to force them in and I went into acute kidney failure and was on dialysis..BTW it was Christmas eve 09 when they found out what was making me sick all this time and all they could say was "SORRY" we didn't believe you but not before accusing me of being a drug seeker, alcoholic, hypochondriac, etc for three years because labs and scans and bone marrow biopsies and lumbar punctures showed nothing.I know my body well and went from doctor to doctor because yeah they can check your Amylase and Lipase but my pancreas is so atrophic it no longer registers either. If you need any help or advice feel free to e-mail me. I don't freely give out my e-mail but have been where you are and you can, I hate to say it, die from this(pancreatitis, etc) if you don't get proper care. I am only saying to anybody with chronic health issue that when you are sick and lack a diagnosis it is important to be your own advocate because nobody else will be and don't take NO for an answer. Labs and scans are not always the answer and I am living proof of that!