Retrograde intrarenal surgery in the management of pediatric cystine stones

The results clearly indicated that RIRS is a safe treatment modality in the management of pediatric cystine stones.Summary table. Stone characteristics and operative findings.Number of patients14Mean stone size (mm)13.6 ± 2.4 (range: 10-18)Stone location Renal pelvis4 Upper calyx4 Middle calyx3 Lower calyx3Mean operation time (minutes)38.2 ± 7.2 (range: 30-50)Postoperative fever1 (7.1%)Stone-free rate100%