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Aim: To assess and compare the outcomes associated with ureteroscopy and laser fragmentation (URSL) for extremes of age group (≤10 and ≥80 years). Methods: Retrospective consecutive data were collected from two European centres for all paediatric patients ≤10 undergoing URSL over a 15-year period (group 1). It was compared to consecutive data for all patients ≥80 years (group 2). Data were collected for patient demographics, stone characteristics, operative details, and clinical outcomes. Results: A total of 168 patients had 201 URSL procedures during this time (74 and 94 patients in groups 1 and 2 respectively). The mean age and stone sizes were 6.1 years and 85 years, and 9.7 mm and 13 mm for groups 1 and 2 respectively. While the SFR was slightly higher in group 2 (92.5% versus 87.8%, p = 0.301), post-operative stent rate was also significantly higher in the geriatric population (75.9% versus 41.2%, p = 0.0001). There was also no significant difference in pre-operative stenting (p = 0.886), ureteric access sheath use (UAS) (p = 0.220) and post-operative complications. Group 1 had an intervention rate of 1.3/patient as compared to 1.1/patient in group 2. The overall complications were 7.2% and 15.3% in groups 1 and 2 respectively (0.069), with 1 Clavien IV complication related to post-operative sepsis and brief ICU admission in group 2. Conclusion: The paediatric population had a marginally higher incidence of repeat procedure, but the overall SFR and complications were similar, and post-operative stent insertion rates were much better compared to geriatric patients. URSL is a safe procedure in the extremes of age groups with no difference in the overall outcomes between the two groups. [ABSTRACT FROM AUTHOR]

Introduction: Although pediatric ureteroscopy has been increasingly performed, the evidence for its use in pediatric lower pole stones (LPS) is sparce. In this study we look at the effectiveness and outcomes of flexible ureteroscopy and laser lithotripsy (FURSL) in the management of LPS for a pediatric population. Materials and Methods: Data were collected from two large European tertiary endourology centers that specialize in pediatric kidney stone management. The study was registered as an audit at the respective hospitals. All data were cross-checked and analyzed using electronic operative notes, discharge records, laboratory systems, and patient correspondence. The inclusion criteria were patients ≤16 years with LPS having an FURSL procedure. Results: A total of 57 pediatric patients underwent FURSL for LPS. The mean age was 10.1 ± 4.7 years (range: 1–16.9 years) with a male–female ratio of 2:3. The mean single stone size was 9.45 ± 3.9 mm (range: 3–20 mm) and 31 (54.4%) had multiple stones. A preoperative stent was present in 18 (31.6%) patients and a postoperative stent or ureteral catheter was left behind in 32 (56.1%) patients. The initial and final stone-free rates were 82.4% and 98.2%, respectively, with 1.19 procedures per patient performed to be stone free. Although there were no intraoperative complications, there were only four (7%) minor complications (Clavien I) noted that were all simple urinary infections. No long-term complications were noted. Conclusion: Flexible ureteroscopy and lasertripsy achieve excellent outcomes for treatment of pediatric LPS. Although some patients might need a second procedure for complete stone clearance, FURSL may be considered as the first-line treatment of LPS. [ABSTRACT FROM AUTHOR]