I had an aunt who had a bladder cancer. She was in great shape when she was diagnosed (she was an avid cyclist). She worked as a nurse and was a non smoker so maybe she was in contact with some chemicals when she was working.
Unfortunately, she past away after a battle of a few years.
But I remember when she was first diagnosed that she was quite hopeful for remission because she met people who were survivors after more than 20 years! So there is also hope.
I hope that neither you or a loved one will be diagnosed with that illness.