Urologists use ureteroscopy to remove stones that are stuck in the ureter and are closer to the bladder than the kidney (in the lower third of the ureter). But newer technology is allowing ureteroscopy to be used even for small stones in or near the kidney.

During ureteroscopy, the doctor passes a thin viewing instrument (ureteroscope) through your urethra and bladder into your ureter. The doctor moves the scope through your ureter until it reaches the location of the kidney stone. No cuts are made in the body.
Your doctor can take out the kidney stone using a small "basket" that comes out of the end of the ureteroscope. Small stones can be removed all in one piece. Larger stones may need to be broken up before the doctor can remove them.
Procedures can be stressful. This information will help you understand what you can expect. And it will help you safely prepare for your procedure.
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