This issue of Hematology/Oncology Clinics, Guest Edited by Dr. Guru P. Sonpavde, is devoted to Bladder Cancer. This issue is one of six selected each year by our series Consulting Editors, George P. Canellos and Edward J. Benz. Topics discussed in this important issue include: Epidemiology of bladder cancer, The molecular biology of bladder cancer and potential implications for therapy, Current therapy for metastatic urothelial carcinoma, Current perioperative therapy for muscle invasive urothelial carcinoma, Current therapy and emerging intravesical agents to treat non-muscle invasive bladder cancer, Diagnosis and staging of bladder and upper tract urothelial cancer, Surgery for bladder and upper tract urothelial cancer, Bladder conserving therapy for muscle invasive bladder cancer: opportunities to incorporate molecular profiling, Emerging immunotherapy for bladder cancer, Emerging targeted therapy for bladder cancer, Real world outcomes of patients with bladder cancer, Preclinical systems to develop bladder cancer therapeutics, Developing precision medicine for bladder cancer, and Future Directions in Bladder Cancer Treatment and Research.