stones are treated differetly based on their size. Small stones less than 6mm are usually treated by medical therapy but larger size requires surgical removal otherwise it will not come out. There are different ways of performing the surgery. Some Urologists use thin tubes or endoscopes passed into urethra
and can remove stones, which is relatively safe and a very quick and painless procedure. Nothing to worry. Please discuss about he benefits and risks with the Doctor and get best treatment for her.