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Treatment & Services

Ureteroscopic lithotripsy (URS)

This is the endoscopic treatment of ureter stones using a mini-scope. Under general anaesthesia, the ureteroscope is passed via the urethra into the bladder and up the ureter. A laser fibre or lithoclast probe is used to break the stone into smaller pieces. These tiny stone pieces will pass out on their own. Sometimes a wire basket is used to fish out the stone pieces. This surgery takes 30 mins on average and can be done as a day case. Occasionally, a double-J (DJ) stent may need to be inserted if there be any injury to the ureter wall or if there is already gross hydronephrosis (swelling) of the kidney due to the impacted stone. The success rate for stones lodged in the lower ureter is near 100%. For stones lodged at the mid to upper ureter, there is a chance they may float up into the kidney beyond the reach of the scope. If this happens, then a DJ stent is inserted and the stone managed by ESWL.