Thank you for your kind response.
I will discuss with my dads' surgeon here then
proceed with the next course of action on our part.
Can never give up hope.
Dad should be back in Canada by Thursday.
I'll get him on this discussion bord and talk to like minded people. There might be something that is working for someone else that he has not tried.
May God bless all that are affected by this terrible cancer, and that there will be a cure found soon.