Ureteroscopy is currently becoming an important part of the therapeutic arsenal available to urologists. Like any new technique, the practice of semi-rigid or flexible ureteroscopy requires the operator to have a perfect knowledge of the speciality of the equipment used, as well as a flawless command of its handling.The aim of this book is to enable future urological surgeons to acquire these essential prerequisites, thanks to the precision of the text and to numerous very explicit illustrations. Thus, we have detailed step by step the different steps of ureteroscopy as well as its instrumentation in the management of urinary lithiasis, a tumor of the excretory tract, a diverticulum or a ureteral stenosis.Although theory cannot replace the operative act itself, it will be greatly facilitated by the careful reading of this book which will become the bedside book of the future endourologist.