I fostered a female 3 yo. Peke right after her surgery. Yes, it is serious surgery and there are web sites that will show you exactly what is done. You have to be vigilant afterward to make sure their urine is not concentrated and the food has to be changed. Frequent urine tests also.
Take care and
Bladder Stone Surgery in Dogs and Cats at ThePetCenter.com.. Also, there are two types of stones.
Warmly, Deborah