I wonder if it’s from an incidental finding on abdominal CT scans.
For instance, the ER will do a CT at the drop of a hat if they suspect appendicitis or diverticulitis, or just for unexplained abdominal pain.
RBG’s early stage was found when investigating her gallbladder or something.
The pancreas and the gall bladder interact with each other all the time. Usually the PC will block the duct from the gallbladder and it screws up your digestion.