Endoscopic internal drainage of pediatric endophytic simple renal cysts via fURS or needle-perc access.

This study presents a novel endoscopic laser internal drainage technique for pediatric endophytic simple renal cysts. Tailored to anatomy using flexible ureteroscopy or needle-perc approaches, it creates a cyst-collecting system fistula via holmium laser for durable decompression. With a high success rate and minimal invasiveness, it offers a safe and effective alternative to traditional methods for problematic pediatric cysts.