My dad is in his early 70s he was diagnosed with bladder cancer around 7 months ago. He's had 3 months of chemotherapy. 3 weeks ago he had a check up and it has now spread to his lungs. Weekend just gone he started immunotherapy. He feels fine in himself but I'm worried as I don't know how bad my dad's cancer is. Is there a way I can find out as my dad seems to be laid back about the whole thing? Thank you