Nephron-Sparing Surgery in Pediatric Renal Tumors Arising From a Horseshoe Kidney: Proposal of a Lacking Definition

This article addresses the surgical management of renal tumors, particularly Wilms tumor, occurring in horseshoe kidneys—a congenital fusion anomaly affecting 1 in 500 newborns. The authors propose a standardized definition for nephron-sparing surgery in this unique anatomical context, emphasizing complete tumor resection while preserving viable renal tissue.