It's very important you know the signs.
And again, why?
I had a surgeon who had a Board Certified Oncological Surgery Fellowship from Sloan-Kittering and was the Chief Surgeon for a Branch of MD Anderson Cancer Center. In dealing with my stomach cancer surgery we had a number of discussions about gastric cancer treatments in general.
I asked about the specific issues with pancreatic surgery and he said the pancreas had very little structure and it was like operating on a stick of softened butter.