How quickly does bladder cancer grow and spread?

Depends: It depends on the type of cancer and stage at the time sof diagnosis. If it is a non-aggressive form, it may take months or sometimes years to recur. If the tumor is very aggressive or advanced at the time of diagnosis, it is much more likely to recur quickly.

It depends: There are different types of bladder cancer. Some behave very aggressively while others do not. Generally, high grade (a microscopic feature) cancers are associated with high risk of larger tumors (high stage) which may spread and even be fatal. Low grade tumors typically do not spread outside of the bladder, though both kinds can often recur.