Background And Purpose: The best management of upper ureteral calculi is undefined. We performed a prospective randomized comparison between semirigid ureteroscopy (URS) and shockwave lithotripsy (SWL) for upper ureteral stones <2 cm to evaluate safety and efficacy of both procedures.
Patients And Methods: Patients with a single radiopaque upper ureteral stone <2 cm undergoing treatment between January 2010 and May 2011 in our department were included. Randomization was performed into two groups-group A: SWL performed as an outpatient procedure using an electromagnetic lithotripter (Dornier Compact Delta); group B: URS performed using an 6/7.5F semirigid ureteroscope with holmium laser intracorporeal lithotripsy. Statistical analysis was performed regarding demographic profile, success rates, retreatment rates, auxiliary procedures, and complications.
Results: There were 90 patients enrolled in each group. Mean stone size: 12.3 mm in group A vs 12.5 mm in group B (P=0.52). The overall 3-month stone-free rate was (74/90) 82.2% for group A vs (78/90) 86.6% for group B (P=0.34). For stone size <10 mm, 3-month stone-free rates were (45/53) 84.9% for group A vs (43/49) 87.7% for group B (P=0.32). For 10 to 20 mm stones, 3-month stone-free rates were (29/37) 78.4% for group A vs (35/41) 85.4% for group B (P=0.12).The re-treatment rate was significantly greater in group A than group B (61.1% vs 1.1%, respectively; P<0.001). The auxiliary procedure rate was comparable in both groups (21.1% vs 17.7%; P=0.45). The complication rate was 6.6% in group A vs 11.1% in group B (P=0.21).
Conclusions: Both SWL and semirigid URS are safe and highly efficacious for treating patients with proximal ureteral stones <20 mm. For stones <10 mm, SWL was safer, less invasive, and of comparable efficacy with URS. For stones between 10 and 20 mm, however, URS was more effective, with a lesser re-treatment rate.
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