Abstract：Objective: To summy the experience of robot-assisted laparoscopic pyeloplasty (RALP) for treatment of ureteropelvic junction obstruction (UPJO) and to exert the advantage of robot-assisted laparoscopic technology. Methods: We analyzed the clinical data and surgical methods of 21 cases of UPJO with RALP in our hospital from Sep. 2014 to Sep. 2016 retrospectively. There were 12 males and 9 females with a mean age of 26 years old (range: 17 to 37 years old). The lesions were located on the left side in 11 cases, on the right side in 9 cases and on the bilateral side in 1 case. Eighteen cases were diagnosed as UPJO on the one side, and 1 case on the bilateral side. There was 1 case of lower kidney UPJO with right renal duplication, and 1 case of left UPJO with renal calculus. All of cases underwent RALP. The surgical mothed of Anderson-Hynes was adopted. Results: Twenty-one RALP operations were finished succussfully and one of them underwent operation with bilateral sides. None was converted to open operation or traditional laparoscopy. The mean operative time of RALP was 85 min (from 65 to 110 min) and mean haemorrhage was 18 mL (from 10 to 30 mL). No leakage of urine after the operation occurred. The double J tubes were removed by cystoscope after 1 or 2 months. All the cases were followed up from 2 to 24 months. Hydronephrosis of 21 cases was mitigated. Conclusions: RALP could reduce difficulty and improve accuracy of laparoscopic pyeloplasty. The efficacy of surgery was satisfied.
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