5. Back pain
As a pancreatic tumor grows it puts pressure on internal organs, muscles, and the spine. That can cause a dull ache in the lower back.
This is a tricky symptom because lower back pain can be caused by all sorts of things, from menstrual cramps to sleeping in a weird position or working out too hard. It is most concerning if the pain seems connected to an ache in the abdomen or doesn’t lessen in intensity after several days.