Abstract：To study the applied value of flexible ureteroscope in lithotripsy for calculi of horseshoe kidney. Methods: Eight patients with calculi in horseshoe kidney were treated by Olympus digital flexible ureteroscope. We kept the ureteral access sheath after expanding the ureteroscope, then imbedded the Olympus digital flexible ureteroscope and used the holmium laser to do the further lithotripsy for the treatment. Results: All of the patients were successfully operated. The mean operation time was 88 min (50-120 min). Seven cases obtained the stage-one success of lithotripsy (87.5%). In one patient with the angle between lower calyx calculi and pelvis less than 90°, no calculi were visualized by the flexible ureteroscope, and after 3 days, this patient was given ESWL for lithotripsy. The average hospital stay after operation was 2.5 days. Conclusions: Flexible ureteroscopy with holmium laser lithotripsy is a safe and effective treatment for calculi in horseshoe kidney. It's worth spreading in clinical treatment.
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