Hi Jess,
Sorry to see that your fathers cancer has spread, don't bother looking at prognosis on google everything there is out of date.
Since i was diagnosed we now have Abbi, Enzo, Radium and early chemo all of these help.
I was diagnosed over 3 years ago with spread everywhere, i still go jet skiing with the twins horse riding, so don't despair.
I wish your dad all my best wishes on this crap journey
Si