Dear New,
This bladder diverticulum factor is very new to me. I admit that I had to look it up. It seems that bladder divericula is a congenital abnormality...
this from Wikipedia
Sometimes we like to ask what area of the country you live, or if you are living outside of the US. This helps us to guide you to some of the very best hospitals for second opinions and sometimes for treatment. The hospital or clinic which you choose to give him opinions and or treatment will be of invaluable support to his cancer battle.
As far as BCG, etc goes, I couldn't even fathom a guess.
As far as finances go, I wonder if a State subsidized hospital would be your best bet. But, first, I think you need to get beyond the second opinion.
Please keep talking to us here. As I said, this is a new one on me.
Best of luck,
Your new friend,
Rosemary