Unfortunately there is a 40 - 70 % risk of a bladder cancer returning (recurring) depending on the features of the tumor. (uofmhealthblogs.org)
«Radiation therapy to treat uterine cancer linked to increased risk of bladder cancer later in life.» (sciencedaily.com)
Hairdressers exposed to dyes at work may have a slightly higher risk of bladder cancer, but the IARC says there's not enough evidence to link personal hair - dye use and cancer. (health.com)