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(RDCW). The following variables were recorded: age, gender, side, size on ultrasonography/computed tomography (CT), location, operative duration, blood loss, complications, pathology, presence or absence of flank pain, hypertension, urinary tract compression or urinary infection. The primary endpoint of this trial was to evaluate and compare the efficacy of both treatments. Secondary endpoints were safety and pain, hypertension and the resolution of urinary tract obstruction.

Ninety-one patients were enrolled and randomized into two groups, each receiving a different therapy for 10 days. Group A (46 patients) received a further cycle of tamsulosin (0.4 mg daily), and group B (45) did not. Age, gender, stone size, time to expulsion, number of acute episodes of colic during treatment and analgesic consumption were recorded. Patients who were not stone-free after the study period had ureteroscopy. The results were compared statistically using Student's t -, chi-square test and Fisher's exact test. RESULTSThe groups were comparable inage, gender and stone size (5.93 mm for group A and 6.03 mm for group B). The expulsion rate was significantly higher in group A (80%) than in group B (49%) ( P < 0.01), whilst there were no differences between the groups in the number of colic episodes and analgesic use. There were no reported sideeffects of medical therapy. CONCLUSIONS

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