If someone had cancer and was heading towards the last stages can it be painless?

Or do you know anybody with Cancer or had cancer, and if so was the pain bearable until they died. I know being a Christian absent from the body is present with the Lord. Better to be absent from the body and present with the Lord in a spiritual body where you have all your 5 sences and living in Gory which is beyond any human mind than to be stuck in this horrible world. At least in Heaven you get a new body, and I cannot wait. My mother told me a few years ago that she used to know this old lady who had some terminal illness and she was a Christian and on her bed that she fell asleep and woke up in glory she told my mother that she lived a good life and was ready to go home to Jesus and she was very happy and peaceful. My mother being a registerd nurse has witness patients who did not know the Lord on their deathbed and it is the most terrible time of their lives and they were so scared acording to my mother who saw them.