ESPU Programme 2010 S37

failure. Data was analyzed with respect topatient demographics, stone parameters,treatment characteristics for the stone-freestatus and complication rates. Backwardstepwise logistic regression method wasused for statistical analysis.

RESULTS

The mean patient age was 7.78 (1-16) years.The mean of stone burden, SWL session,energy level and shock waves were1,15 cm2, 1.71, 16.9 kV, and 1702,

respectively. Double J stent andpercutaneous nephrostomy tube as auxiliaryprocedures were used in 28 (7.4%) and in 8renal units (2.1%), respectively. Sixty-four(17%) patients had stone disease at the samerenal unit in previous history and 8 patients(2.1%) had renal anomalies. The stone-freerate was 77,2% and failure was 22.8%. Stone-free status was achieved after first session in67.4% of them. Complications developed in25 (6.6%) patients; steinstrasse in 24 andfever in 1. In multivariate analysis, while thestone burden, auxiliary procedures and

previous stone history negatively correlatedwith stone-free status, complications wereassociated with stone burden and number ofsessions.

CONCLUSIONS

ESWL treatment in pediatric patients is themost preferred method because of theminimally invasive nature. However, everysingle factors affecting the stone-free statusand complication rates should be counseledthe parents of children with urolithiasis.

# S02-6 (PP)

URETEROSCOPIC STONE TREATMENT IN PRESCHOOL CHILDREN

Mesut PISKIN1, Selcuk GUVEN1, Ahmet OZTURK1, Mehmet KAYNAR1, Ozcan KILIC1, Giray KARALEZLI1, Harun PERU2 andMehmet KILINC1

1Selcuk University Meram Medical Faculty, Urology Department, Konya, TURKEY, 2Selcuk University Meram Medical Faculty, PediatricNephrology Department, Konya, TURKEY

PURPOSE

We described our ureteroscopic pneumoticlithotripsy experience with uretric stones inpreschool age children.

MATERIAL AND METHODS

We retrospectively reviewed the records of24 children 1 to 6 years old who underwentureteroscopic lithotripsy at our institutionbetween January 2005 and July 2009.Patient age and gender, localization ofcalculi, surgical procedures, surgicaloutcomes and complications were recorded.

All procedures were performed undergeneral anesthesia using 8 Fr semi-rigiduretereoscopy. Stones were fragment witha pneumatic lithotriptor.

RESULTS

Nine female, 15 male, totally 24 childrenreview in this study. The mean age of thepatients was 3,2 years. Mean stone size was7.7 mm. Stone localisations were proximalureter in 4(16.6%) and distal ureter in(83.4)%. Balloon dilatation was performed inonly one patient that was 1 year old age inrest hydrolicdilatation was used.

In all patients the stones were fragmentedduring the operation; the stone fragmentswere extracted with triceps basket. 22 ofthe 24 patients were stone-free after a one-stage procedure (92 %) within 4 weeks afterthe procedure; a further procedure in theremaining one of two patients the successrate was 96% (23/24). In two patients ureterwas perforated and mucosal tear was seen inone.

CONCLUSIONS

Ureteroscopic lithotripsy is effective in alsopreschool age children.

S03: ENDOUROLOGY / LAPAROSCOPY

# S03-1 (O)

LAPAROSCOPIC URETEROPYELOANATOMOSIS IN THE TREATMENT OF DUPLEX KIDNEYS

Francisco DENES1, Marcelo HISANO1, Marcos MACHADO2, Homero BRUSCHINI1 and Miguel SROUGI11S~ao Paulo University, Urology, S~ao Paulo, BRAZIL, 2S~ao Paulo University, Urology, S~ao Paulo, BRAZIL

PURPOSE

To present our experience in thelaparoscopic management of duplex kidneyswith functioning upper units (UU) associatedto ureterocele or ureteral ectopy.

MATERIAL AND METHODS

Four girls were diagnosed with duplexkidneys, three with urinary leakage and onewith febrile UTI. All presented dilated,albeit functioning UUs, three with ectopicureter, one with ureterocele.

All were submitted to transperitoneallaparoscopy, preceded by insertion of DJstent in the ipsilateral lower unit. Aftercolonic mobilization and kidney exposure,the ureters were isolated. The ureter of theUU was sectioned and spatulated at the levelof the lower kidney pole. The ureter of the