Can Abdominal Pain Be Related To Half Of The Pancreas Being Very Dense ?

I went to the dr because abdominal pain. actually it is sort of under right rib. I had an ultrasound done(pelvic and abdomen) results were my pancreas was "too thick" so dr ordered enzyme test and ct scan. blood tests show that my pancreas puts out too much insulin and ct shows half of pancreas is normal density, other half very dense. So she is now sending me to a gastro dr and i need an mri she said. What would cause these findings?