Foreword.- Definitions of segment or zone, segmentary renal diseases, segmentary renal surgery.- Renal organization.- Surgical anatomy of segmentectomy, or calicectomy or lobectomy.- Potentially segmentary renal diseases (calculosis, tuberculosis, congenital or not cystic diseases, special inflammations, pyramid congenital pathologies).- Reconstructive intrarenal surgery.- Calicopieloplastic.- Calical stricture.- Other Intrarenal Procedures.- Laparoscopic and Robotic surgery.