This book is a comprehensive guide to state of the art techniques in functional urologic surgery that minimize functional damage to the urinary tract and are of particular value in patients with oncologic or neurogenic diseases. The main currently available minimally invasive surgical techniques are described step by step, with guidance on indications and the appropriate selection of surgical devices in order to achieve the desired oncologic and functional outcomes. Data from the available case series are presented, documenting the favorable functional and oncologic results achieved with these techniques and devices as well as the low associated morbidity and the beneficial impact on quality of life. In addition, advice is provided on preoperative assessment and postoperative care, and specific diagnostic algorithms of value in daily clinical practice are presented. The authors are a panel of international experts who have been carefully recruited for their knowledge on the topics that they discuss.