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Ureteroscopy has been used for the treatment of calculi throughout the ureter. The results of ureteroscopic stone removal were reviewed in 100 patients. Similar results were compared in 30 patients undergoing ureterolithotomy and 32 treated by basket manipulation. Success of ureteroscopic removal was related to the location of the calculus: 50 per cent in the proximal, 80 per cent in the mid and 99 per cent in the distal ureter. Hospital stay, costs and narcotic analgesic use were significantly less for ureteroscopic stone removal than for open surgical lithotomy. The success rate for ureteroscopic removal of distal calculi (99 per cent) was higher than for blind basketing procedures (59 per cent). Ureteroscopy should be considered the technique of choice for the removal of distal ureteral calculi. It is an acceptable alternative for treatment of calculi throughout the urinary tract.