Category: Clinical Stones: Pediatrics

MP9-9 - Ultra Mini PCNL for Treatment of Upper Urinary Calculi Less than 20 mm in Children

Fri, Sep 21
2:00 PM - 4:00 PM

Introduction & Objective :

The latest method of minimally invasive percutaneous  nephrolithotomy (MIP)  is “Ultra-Mini-percutaneous  nephrolithotomy (UMP). In this method surgeon allowed to use 11–13F sized sheaths. The aim of this study was to investigate the efficacy and stone clearance rate of Ultra Mini PCNL in treatment of upper urinary calculi less than 20 mm in children under 8 years of age.


Methods :

This cross-sectional study was conducted on 19 children under 8 years of age with upper urinary calculi less than 20 mm. All demographic, surgical and post operative data were obtained from patients` medical record. Stone clearance rate as successful rate and also intra operative and post operative outcomes were evaluated. For 15 patients 13F sheath and for 4 patients 11F sheath was used. Data were analyzed using SPSS Ver.20.


Results :

Total of 11(57.90%) were male and 8 (42.1%) were female. The mean age was 5.05 years. The mean stone size was 15±5 mm (9-20 mm). In 12 patients, the stones were on the right kidney and in 7 patients; the stones were on the left kidney. The stone location was as follow; 4 in pelvic, 2 in upper calyces, 5 in middle calyces, 4 in lower calyces and 4 in upper uretre. Total stone free rate after 4 weeks was 97%. Hospital stay was 1 ±1 day. Two patients had Post operative fever >38 38 degrees centigrade. No urosepsis and blood transfusion was observed.


Conclusions :

Ultra Mini PCNL is a safe and effective treatment for children with upper urinary calculi less than 20mm.

Heshmatollah Sofimajidpour

Associate Professor
Kurdistan University of Medical Sciences
Sanandaj, Kordestan, Iran

Ghobad Moradi

Associate Professor
Kurdistan University of Medical Sciences
Sanandaj, Kordestan, Iran