Malignant disease of the genitourinary tract continues to provide a major health hazard. The study of these disease processes has been hampered at the clinical level as there has been a serious lack of reasonably controlled treatment trials, and at the basic science level as many of the animal model systems do not compare favorably with the human tumor situation. This volume defines current cancer treatment and research and its appli- cation to the control of human genitourinary malignancy. The authors have developed their chapters in such a way as to provide an up-to-date resource for the clinician who is involved in day-to-day patient care problems, for the clinician-investigator who is attempting to construct programs designed to evaluate the impact of current treatments, and for the clinician-scientist who is seeking to apply basic research technology and skills to understand- ing and control in this disease area. This book does not attempt to cover the entire breadth of urinary malig- nant disease, but focuses in depth on specific problem areas. It provides the reader with sufficient background and understanding for him to be able to evaluate future studies in the areas addressed, or even to develop his own projects. A reasonable balance has been established between clinical and basic research problems, recognizing that the two disciplines truly are not separable. The book serves to define the state of the art and, as such, will of urologic oncology.