Why do stents cause some kidney stone patients pain?

For most, getting kidney stones removed through an ureteroscopy might be an uncomfortable, but tolerable, procedure.
Yet for about 20 percent of patients, the procedure of treating a stone and placing a temporary ureteral stent - to counteract swelling and allow passage of urine from the kidney to the bladder - is agonizing. A new study being conducted at UW Medicine’s Urology Department will be looking at why.
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