The aim of this course is to provide the practicing pathologist and pathologist in training with a comprehensive update on the pathology of tumors of the kidneys and urinary bladder through a series of lectures given by experts on these subjects. The first half of the course will deal with the pathology of common and uncommon neoplasms of the epithelium of the renal tubules, pathology of mesenchymal and mixed renal neoplasms, and with the staging and grading of renal cell carcinoma. The second half will turn to the urinary bladder and will cover tumor-like conditions, the diagnosis of urothelial carcinoma from urine and other important aspects of urothelial carcinoma including classification, staging and reporting, and common and uncommon variants.