Do people sometimes survive stage 4 bladder cancer?

It depends: Stage-4 bladder cancer has good treatments available such that about half of the patients do well by showing good regression of their tumors. About 15-20% achieve complete response(cr). Some of the patients in cr have a long term control of their cancer and are cured of this disease. To get good results, seek an expert in gu-medical oncology at a major cancer center as your treating oncologist.