To evaluate the effect of laparoscopic heminephrectomy in treatment of children patients with duplex kidneys.

Eleven patients (4 males and 7 females) who had been diagnosed with duplex kidney and received laparoscopic heminephrectomy in Pediatric Surgery Department of Sichuan Academy of Medical Sciences & Sichuan Provincial People's Hospital between December 2015 and November 2016 were reretrospectively reviewed. The operations were carried out under general anaesthesia. During the operation the "highly selective clamping of renal vascular" was employed. Patients' characteristics, presenting symptoms, operative time, and blood loss, early and late complications were all collected retrospectively.

All 11 patients received laparoscopic heminephrectomy with highly selective clamping of renal vascular. All operations went smoothly without converted to open surgeny and blood transfusion. Average operative time was 133 min (range 110-154 min), blood lose was 14 ml (range 10-20 ml), mean hospital stay after operation was 5 days. On follow-up of 1-6 months no symptomatic urinary tract infections (UTIs) and atrophic kidney were detected.

Laparoscopic heminephrectomy isa minimal invasive procedure for the treatment of pediatric patients. Highly selective clamping of renal vascular is important for the preservation of renal function and also the blood loss control.