If the stone is small, it may be snared with a basket device and removed whole from the ureter. If the stone is large, or if the diameter of the ureter is narrow, the stone will need to be fragmented, which is usually accomplished with a laser. Once the stone is broken into tiny pieces, these pieces are removed. Ureteroscopy is a procedure to address kidney stones and involves the passage of a small telescope, called a ureteroscope, through the urethra and bladder and up the ureter to the point where the stone is located. Ureteroscopy is typically performed under general anesthesia, and the procedure usually lasts from one to three hours. The passage of the ureteroscope may result in swelling in the ureter. Therefore, it may be necessary to temporarily leave a small tube, called a ureteral stent, inside the ureter temporarily to ensure that the kidney drains urine well. Ureteroscopy usually can be performed as an outpatient procedure, however; patients may require an overnight hospital stay if the procedure proves lengthy or difficult.
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