I also have Pancreatic Neuroendocrine Carcinoma. Please visit my blog which talks about what my treatment plans are and what my Doctors are hoping to do. Mine moved to my liver instead of my stomach, so it will not be exactly the same, but there is a lot of info and links about the cancer and treatments. I would be happy to talk to you further about it but I have to run right now to get down to UCLA. I am having surgery down there this Tuesday.
The thing that made the most difference in my fight was finding doctors who had experience with this type of cancer. It is rare and that makes it much more difficult. Please look at getting a second opinion if you are able to!
Talk to you later and good luck to your friend and his surgery!
Mark
http://ouroboros1.blogspot.com