ESPU Congress 2018 - Abstract Book

178 29 th CONGRESS OF THE ESPU 11:49–11:52 S24-2 (PP) SPONTANEOUS PASSAGE OF <=1CM URETERAL STONES IN CHILDREN: IS THERE A PREDICTING FACTOR? Ahmet Midhat ELMACI  1 , Muhammet Irfan DONMEZ  2 , Fatih AKIN  3 and Metin GUNDUZ  4 1) Dr. Ali Kemal Belviranli Women's Maternity and Children's Hospital, Pediatric Nephrology, Konya, TURKEY - 2) Dr. Ali Kemal Belviranli Women's Maternity and Children's Hospital, Pediatric Urology, Konya, TURKEY - 3) Necmettin Erbakan University Meram Medical Faculty, Pediatrics, Konya, TURKEY - 4) Selcuk University Medical Faculty, Pediatric Surgery, Konya, TURKEY PURPOSE To analyze if there were any factors that could predict spontaneous passage of ≤1 cm ureteral stones in children. MATERIAL AND METHODS The files of the patients diagnosed with ureteral stone between 2008–2017 from two different hospitals were retrospectively reviewed. Detection of ureteral stones were done using ultrasonog- raphy and computed tomography when needed. Patients were either conservatively or surgically managed. Conservative treatment included adequate hydration and pain management whereas surgical treatment included ureterorenoscopic intervention. Patients were referred for surgical treatment after 15 days of follow-up with no spontaneous passage. Factors such as; age, gender, type of hematuria (macroscopic/microscopic), presence of dysuria, abdominal/side pain, irritability, vomiting, stone localization (proximal/mid/distal ureter), laterality, presence of concomitant kidney stone, degree of hydronephrosis, stone size and stone composition were analyzed. RESULTS A total of 70 patients (32 males, 38 females; mean age 5.5±4.4 years) were found to have been diagnosed with ≤1 cm ureteral stone (mean maximum diameter 6.7±2.3 mm). Diagnosis was made using ultrasonography in 47 patients and computed tomography in 23 patients. Spontaneous pas- sage of the ureteral stone was observed in 40 patients. Stone composition of 22 patients were available (17 calcium oxalate, 4 cystine, 1 uric acid). Stone size was found to be the only factor that could predict spontaneous passage (5.19±1.59 vs 8.90±1.27, p<0.001). Interestingly, stone localization was not shown to predict spontaneous passage. Additionally, there were no significant difference between age groups (0–5 vs 5–15 years, p>0.05). CONCLUSIONS In our study, spontaneous passage of ≤1 cm ureteral stones in children could be predicted solely with stone diameter. Therefore, expectant management strategies should be initially followed in patients with ureteral stones <7 mm. 11:52–11:58 Discussion