No treatment is needed for these stones in the Kidney and any damage, if stones block the flow of urine out of both kidneys or out of one kidney, for people who have a single kidney. For most people with healthy kidneys, kidney stones do not cause serious damage until they completely block the urinary tract for 2 weeks or longer

With medical expulsive therapy, most small stones (less than 5 or 6 mm) will typically pass within a few days to a few weeks. Provided you are in good health, you can try for up to 6 weeks to pass a stone, although most patients elect for earlier intervention. Q. I was passing a kidney stone, but now I feel better.

To remove a smaller stone in your ureter or kidney, your physician may pass a thin lighted tube (ureteroscope) equipped with a camera through your urethra and bladder to your ureter. Once the stone is located, special tools can snare the stone or break it into pieces that will pass in your urine