Study Status: Completed
Recruit Status: Completed
Study Type: Interventional
Official Title: Efficacy of Udenafil in Treatment of Erectile Dysfunction After Radical Resection for Sigmoid Colon and Rectal Cancer : a Randomized Controlled Trial
Brief Summary: The purpose of this study is to evaluate the efficacy of Udenafil (Zydena®, Dong-A Pharmaceutical co., Ltd, Seoul, Korea) in treatment of erectile dysfunction after radical resection for sigmoid colon and rectal cancer. In this study, the efficacy of Udenafil will be evaluated in treatment for patient with chronic erectile dysfunction, which developed after radical resection for sigmoid and rectal cancer and continues 12 months after the surgery.