A 10-year follow-up study of nearly 2,500 U.S. men who received prostate cancer treatment will help inform decision-making in terms of treatments and side effects for a diverse population. The CEASAR (Comparative Effectiveness Analysis of Surgery and Radiation for Localized Prostate Cancer) study, coordinated by VUMC, is a multisite research study conducting long-term follow-up on men who were diagnosed with localized prostate cancer between 2011 and 2012.