Based in Barcelona, Spain, Dr. Juan Manuel López Martínez is a urologist at Hospital Clínic de Barcelona, where he collaborates with the Renal Transplant Unit. He also serves as Assistant Teacher in the Department of Urology at the University of Barcelona. He specializes in urolithiasis and minimally invasive surgery, with particular expertise in Mini-PCNL, Super-Mini PCNL (SMP), and flexible ureteroscopy. Trained at Fundació Puigvert and through international programs, he is actively involved in the development and refinement of Mini-PCNL techniques. Dr. López Martínez regularly participates in national and international scientific meetings, contributing to the advancement of modern stone surgery.