The critical thing is about pancreatic cancer, not liver
. Stage 4 disease means the survival is less, weeks. Our duty now is how can we give comport by decreasing his problems, agony during this short period. This is called Palliative treatment . Doing things what he wants, will give him some sort of positive psychiatric strength to him .There will be some nursing homes specialized in taking care of terminally ill patients. Better , if possible, he should be under care of these persons.