ESPU Congress 2018 - Abstract Book

82 29 th CONGRESS OF THE ESPU No significant differences in number of analgesic doses given in hospital and in mean pain scores over the 48-hour time period were observed. Mean analgesic use at home was higher for SO(p<0.01). Mean OpT was not significantly different with ITT approach. Per treatment(including conversions) analysis showed that IO was 7 min faster(40±11vs.33±15; p<0.01). Conversions occurred in 16/99(16 %) testes(75 %-canalicular). Overall complication rate=3 %(1-reascent/1- incision dehiscence-SO; 1-wound infection-IO). CONCLUSIONS We found no difference in post-operative pain, analgesic consumption, OpT(ITT) and complications between IO and SO. SO may not be a suitable approach for all patients with canalicular testes. Its indications may need to be tailored to testis position for optimal results. 14:05–14:08 S9-2 (PP) ★ CONTRALATERAL TESTICULAR VOLUME IN CASES OF UNILATERAL NONPALPABLE CRYPTORCHIDISM — A DIAGNOSTIC CRITERION FOR OPTIMIZATION OF SURGICAL TACTICS Vladimir ORLOV  1 , Vladimir SIZONOV  2 , Mikhail KOGAN  1 and Ilia KAGANTSOV  3 1) The Rostov State Medical University, Urology, Rostov On Don, RUSSIAN FEDERATION - 2) Regional Children's Hospital, Paediatric Urology, Rostov On Don, RUSSIAN FEDERATION - 3) Syktyvkar State University named after Pitirim Sorokin, Paediatric Urology, Syktyvkar, RUSSIAN FEDERATION PURPOSE The effort to decrease the frequency of unjustified laparoscopic interventions in cases of unilateral non-palpable cryptorchidism determines the interest towards revealing the diagnostic criteria for optimization of tactical surgery planning. Contralateral testicular volume can be employed as such criterion. MATERIAL AND METHODS Сontralateral testicular volume was prospectively studied in 76 patients (up to 9 years old) with unilateral nonpalpable forms of cryptorchidism. In all patients, the length, width, and height of the contralateral testis were measured. Testicular volume=length*width*height*0.71. Depending upon the undescended testicle condition, the patients were subdivided into two groups: those with vi- able and nonviable testes. A comparison of basic data in the groups was carried out using the Mann-Whitney test. To build the diagnostic model, logical regression was used. We analyzed the significance of regression coefficients evaluating for the regressor the odds ratio (OR) and the 95 % confidence interval. A Receiver Operating Characteristic (ROC) curve was built then for the model and a threshold level was selected to match the optimal ratio between sensitivity and specificity. RESULTS Among the 78 patients, viable testes (intraabdominal or inguinal) were found in 41 (52.6 %), and in 37 (47.4 %) nonviable or missing testes were found. Whenever the contralateral testicular volume exceeded 2.25 ml, a nonviable testicle was identified (sensitivity – 100.0 %, specificity – 73.0 %); when the volume was less than 1.04 ml, viable undescended testes were found in all patients (specificity – 100 %, sensitivity – 34 %). During quality assessment, the area under the ROC curve reached 92.6 % indicating high predictive power of the model.