Hi, my father was diagnosed in March with a 6cm pancreatic tumor. He had a Whipple Procedure, the cancer spread to the lymph nodes, but no other organs. He and healed quickly, and has been on Gemzar for five months, 4 more treatments to go, and he has been feeling pretty okay, considering. His chief complaint is severe back pain(burning), for which he had been taking upwards of 12 percocet a day. Now he takes percs and oxycontin. Meanwhile, I am getting married next weekend, and his next post operative CTscan is the day after my wedding, when I leave for my honeymoon! So far from his last scan, a month ago, the doctors say that the cancer hasn't come back, yet, but I am afraid that it is because of his pain. Does anyone know why he has burning in his back(muscles)? I have exhausted every website trying to find the answer....