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  • Title: Differences in ureteroscopic stone treatment and outcomes for distal, mid-, proximal, or multiple ureteral locations: the Clinical Research Office of the Endourological Society ureteroscopy global study.
    Author: Perez Castro E, Osther PJ, Jinga V, Razvi H, Stravodimos KG, Parikh K, Kural AR, de la Rosette JJ, CROES Ureteroscopy Global Study Group.
    Journal: Eur Urol; 2014 Jul; 66(1):102-9. PubMed ID: 24507782.
    Abstract:
    BACKGROUND: Ureteroscopy has traditionally been the preferred approach for treatment of distal and midureteral stones, with shock wave lithotripsy used for proximal ureteral stones. OBJECTIVE: To describe the differences in the treatment and outcomes of ureteroscopic stones in different locations. DESIGN, SETTING, AND PARTICIPANTS: Prospective data were collected by the Clinical Research Office of the Endourological Society on consecutive patients treated with ureteroscopy at centres around the world over a 1-yr period. INTERVENTION: Ureteroscopy was performed according to study protocol and local clinical practice guidelines. OUTCOME MEASUREMENTS AND STATISTICAL ANALYSIS: Stone location, treatment details, postoperative outcomes, and complications were recorded. Pearson's chi-square analysis and analysis of variance were used to compare outcomes among the different stone locations. RESULTS AND LIMITATIONS: Between January 2010 and October 2012, 9681 patients received ureteroscopy treatment for stones located in the proximal ureter (n=2656), midureter (n=1980), distal ureter (n=4479), or multiple locations (n=440); location in 126 patients was not specified. Semirigid ureteroscopy was predominantly used for all stone locations. Laser and pneumatic lithotripsy were used in the majority of cases. Stone-free rates were 94.2% for distal ureter locations, 89.4% for midureter locations, 84.5% for proximal ureter locations, and 76.6% for multiple locations. For the proximal ureter, failure and retreatment rates were significantly higher for semirigid ureteroscopy than for flexible ureteroscopy. A low incidence of intraoperative complications was reported (3.8-7.7%). Postoperative complications occurred in 2.5-4.6% of patients and varied according to location, with the highest incidence reported for multiple stone locations. Limitations include short-term follow-up and a nonuniform treatment approach. CONCLUSIONS: Ureteroscopy for ureteral stones resulted in good stone-free rates with low morbidity. PATIENT SUMMARY: This study shows that patients who have ureteral stones can be treated successfully with ureteroscopy with a low rate of complications for the patient.
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