It's all part of the follow up maintenance. I look at it like it's a car and you need to tune up/fix up as needed as time goes on.
This is the second time I've had this procedure done and most likely I'll need it again in 2 years or so.
It's called a cystolitholapaxy.
frickin cancer, it won't take me down, no way.
Hope you all have a fantastic 4th of July Holiday weekend