Some exciting research is being done on growing new bladders from people's own tissue! These are starting out being targeted to children with spina bifida, which is exciting because CRS/SA is very similar to SB in some ways, at least in its effects on the urology system.
The company, Tengion, that is working on this is actually located just a few miles from where I live! I'd love to get some kind of job there. Anyway, here is their site: Tengion. Some news stories about it can be found at:
Tengion Trying to Grow Human Organs
Tengion Inc. Presents Tengion Neo-Bladder