Should flexible ureteroscope be added to our armamentarium to treat stone disease?

Higher re-treatment rates after SWL for stones > 20 mm have led the AUA panel to recommend the more invasive percutaneous approach for such stones.[ 9 ] The majority of urinary calculi between 10 and 20 mm are still managed initially with SWL.[ 9 ] As F-URS cannot reach the pelvicalyceal system, there is an increasing trend towards using F-URS for renal stones over SWL.

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