Although there are many studies on percutaneous nephrostomy in urinary obstruction management in pediatric patients, there is a limited number of studies on percutaneous antegrade ureteral stenting (PAUS) on this issue. To evaluate the results of fluoroscopy-guided percutaneous antegrade approach for ureteral stent placement through the nephrostomy route in children. Between October 2005 and June 2019, the medical records of children who underwent PAUS through the nephrostomy route were reviewed retrospectively. Demographic data of the patients, technical and clinical success rates, technical details, and complications of the procedure were recorded. Patients were divided and evaluated into groups according to etiology. Categorical data were analyzed by using the Pearson chi-square test. In total, 31 patients (19 boys, 12 girls; age range = 2 months–18 years; mean age = 7.4 ± 6.01 years) and 42 procedures were included in the study. The most common underlying diseases were ureteropelvic junction obstruction (16 stents, 38.1%) and vesicoureteral reflux (13 stents, 31%). The technical and clinical success rates were 97.6% and 90%, respectively. Clinical failure (10%) was not related to gender, underlying diseases, and stent size (P > 0.05). Mean stent dwelling time was 96.43 ± 58.1 days. Complications were urinary tract infection (two procedures), stent migration (two procedures), early occlusion (one procedure), and contrast material leak after balloon dilation (one procedure). The complication rate was 14.6%. No procedure-related death was observed. PAUS through the nephrostomy route in children is an effective and reliable method when surgical treatment is not feasible.

Objective: Hypercoagulability, called thrombophilia, has a vital role in the development of deep vein thrombosis. During the healing process of patients with thrombosis, the recanalization process in deep veins takes longer in some patients. This study was designed to investigate the role of thrombophilia in this critical process, considering that thrombophilia may be one of the reasons for the prolonged recanalization period. Method: The study was retrospectively analyzed in 118 patients with deep vein thrombosis. Patients were grouped according to thrombophilia or not. Patients were divided into early and late recanalization groups according to the recanalization status on ultrasonography at the sixth month. The thrombophilia status of these groups was evaluated. Results: 62 of the patients were female, and 56 were male. The mean age was 41.92 ± 10.26 years. Thrombophilia was more common in women. There was a significant difference between the mean age and thrombophilia status; the mean age was lower in the thrombophilia group ( p = .029). No statistically significant difference was found between age and recanalization times ( p = 0, 274). Recurrence rates were also higher in the F5 Leiden and Protein-S deficiency group. Conclusion: The presence of thrombophilia affects patients’ recanalization time and, therefore, suggests the need to reevaluate treatment strategies.