Genitourinary Pathology is a complex area with unique diseases and neoplasms not encountered in other systems as well as many entities which overlap with other systems. Experienced surgical pathologists as well as trainees often require comprehensive and visual access to information on entities encompassing genitourinary pathology. This publication is intended to meet those needs through the presentation of up-to-date and very practical overview of entities likely to be encountered in the daily practice of a surgical pathologist. One of the unique aspects of this presentation is the comprehensive coverage of the molecular pathology of each organ from the genitourinary tract with discussion of currently known key tumor markers and techniques. Each presentation provides the reader key gross and microscopic features, differential diagnosis, diagnosis and prognosis. For all the key disease entities, key features, differential diagnosis and pitfalls are presented in quick-reference boxes. This information can be rapidly available for daily sign out or even in preparation for a tumor board or teaching conference. This issue is split into two volumes so that each volume is self contained to cover prostate in one volume and bladder in the other. The wide spectrum of illustrative cases from expert pathologists' consult files successfully highlights the salient features of each entity, leading to the generation of a more comprehensive surgical pathology report that will positively impact the care of the patient. Topics in this volume include: Adult Renal Cortical Tumors, Neoplasms of the Pediatric Kidney, Benign Diseases and Neoplasms of the Testis and Paratesticular Tissue, Molecular Pathology of the GI Tract - Kidney and Testes.