As you may know, this is NOT the common type of bladder cancer. It would be very important for your father to be treated at a center that has a lot of experience in all types of bladder cancer.
Where does he live? Perhaps some of our members can suggest places he might consider for a second opinion and treatment options.
While most of us often recommend second opinions when there are treatment or diagnosis issues, in your case I, personally, feel that this would be very important.
Best of luck to you and your family.
Sara Anne