Being a newbie here I've never known of you but hearing terrible news like this always hits home. My dad got cancer last year and the prospect that it may comeback undetected is terrifying, especially as we've never really talked, and since then I've kept meaning to spend some real time with him but haven't managed due to being so busy.
So in that sense I hope that you're able to take the opportunity now to say or do anything you've ever wanted to, and that you're not in too much pain. My deepest sympathies mate.