Thanks all for the best wishes.
Yes it have been a hard one, especially my mum who have had it herself, as my dad got sick with TB while on his second "nuking" so they had to cure that before they could continue with curing the big C.
The only side effect, is that the "nuking" has killed of his feeling to his feet. So he can't feel if he is standing on something, so walking and get up from a chair is hard.
But else he is tip top