Focused on urinary cytology, bladder biopsy interpretation, and biopsy diagnosis of renal mass lesions, Urinary System: Cytology, Histology, Cystoscopy, and Radiology is unique among genitourinary pathology resources because of its incorporation of cystourethroscopic/ureterorendoscopic features of urologic lesions contributed by urologists along with radiologic features of renal mass lesions and ancillary tests for the detection of urothelial carcinoma. These are all critical pieces in solving the puzzle of managing patients with genitourinary disease.