I would think that the liver was a concern because of the elevated enzymes which occurs often with pancreatitis.
Here is an exerpt from just one website...it actually is on many as it is very common for this to occur.
Diagnosing and Treatment for Pancreatitis in Dogs
Canine pancreatitis is diagnosed by performing a physical exam, blood work, sonograms (ultrasound) and radiographs (x-rays). Enlarged pancreas and elevated pancreatic enzymes are the most common findings in a dog with pancreatitis. Liver problems, including liver enlargement and elevated liver enzymes, also seen in many pancreatitis patients, according to Dr. Levine.
How to Avoid Holiday Pancreatitis in Dogs: Tips to Prevent Pancreas Inflammation, Holiday Hazard to Dogs | Suite101.com
As for a diet, I would be very careful and follow your vet's recommendations closely. The problem with looking for a diet that is good for the pancreas, is that it may not be good for renal issues. Most likely you will be putting him on a diet that is low fat and low protein which is not an easy diet to find. The diet for pancreas is low fat...diet for kidneys is low protein. Seems that most foods only focus on one. I know this from experience and have consulted with A&M for a home cooked diet in the past.