Conversation: The conversation between human and AI assistant.
[|Human|] Hello my grandfather had prostate cancer then it moved to his bones he went for a bone scan on moday and he went to the doctor yesterday and they told him it wasnt just in his bones anymore it is moving very fast through out his whole body how long would you say he would be alive for ?
[|AI|]  Hi, Thanks for writing in. Prostate cancer is a condition that might spread to the bones in the lower back and pelvis in some patients. It is possible that your grandfather had prostate cancer manifestation in his bones and that is now spreading to other organs in the abdomen or elsewhere. The expected survival in stage 4 cancer is up to 2 years from the detection of disease with recommended care and treatment. In your grandfather the countdown to 2 years starts from the day he was told that the prostate cancer has spread to bones. He might be having a lot of pain and discomfort due to nerve root compression from the collapsing vertebrae. Providing him adequate nutrition is important. Please do not worry.