[Intrasinus renal hilium approach, EUREKA time for spanish urological surgical anatomy.]

Historical research has allowed us to reviewand document the author of the first description of the intrasinusal route for access to the renal hilum as astrategy for accessing kidney stones through the bibliography. This new route described and published by M. Serés represented a paradigm shift in open surgery for kidney stones. We want to highlight that the Spanish urological anatomical-surgical investigation with the investigations of Manuel Serés, meant a singular contribution and of enormous importance for the History of International Urology, whose value we must claim with its indisputable and reliable references.