Objective To evaluate the clinical efficacy of retroperitoneal laparoscopic ureterolithotomy.Methods A total of 34 cases(38 sides) of middle(5 sides) or upper(33 sides) ureteral calculus were treated by retroperitoneal laparoscopic ureterolithotomy.The stones were(0.8 cm?1.0 cm)~(1.5 cm?3.0 cm) in size.Twenty cases had been previously treated by unsuccessful extracorporeal shock wave lithotripsy(ESWL).Results The operation was successfully completed in 33 cases and a conversion to open surgery was required in 1 case because of extensive adhesion and blood oozing.The operating time was 45~190 min(mean,85.5 min),the intraoperative blood loss was 10~50 ml(mean,20.6 ml),and the postoperative hospitalization,3~7 d(mean,4.3 d).Postoperative recovery was uneventful.No complication was observed during a 3~24 months(mean,9.7 months) of follow-up.Conclusions Retroperitoneal laparoscopic ureterolithotomy is micro-invasive,simple to perform,and safe.

0.05). Conclusions Carbon dioxide pneumoperitoneum during retroperitoneoscopy has no obvious influence on hepatic functions, renal functions and myocardial enzymogram. It may not cause significant damage to patients with normal heart, hepatic, and renal functions.