So sorry for your situation. I just spent 2 months with my dad of 80. They told us they thought he had pancreatic cancer. Took him to MD Anderson in Houston. They did a biopsy and it came back inconclusive. Did another biopsy and it came back the same. In the meantime he needed heart surgery. Long story short, I learned they cannot always tell with a biopsy if it is cancer or not unless they take the biopsy from an exact spot where the cancer is suppose to be. The Dr. at MD Anderson said in his professional opinion that my dad still had stage 4 pancreatic cancer.
So, they went ahead and did the aortic valve replacement in December since they couldn't say for sure if he had the cancer or not. He almost died several times during his recovery from the heart surgery because his blood pressure got so low. Fast forward, he is at home living independently and reached 81 years of age in January. So, never, never lose hope of any kind. If he did have pancreatic cancer, he would have been dead by now. So, my point is the best doctors in the world are not always right. Never, never lose hope and your attitude is a big part of it all. I will keep you in my prayers.