Background: Simple renal cysts are the most common renal masses, and occur in half of all patients older than 50 years.They are usually asymptomatic and benign, asymptomatic and discovered incidentally. However, over time, these simple cysts can enlarge, become symptomatic and develop complications, requiring intervention.They can be managed by a variety of surgical and percutaneous methods, including percutaneous aspiration (with or without injection of a sclerosing agent), endoscopic marsupialization or excision, open surgery and laparoscopic cyst excision.Percutaneous aspiration and sclerotherapy have been described as safe and effective methods of managing symptomatic simple renal cysts without the cost and morbidity associated with conventional surgery and laparoscopy.However, laparoscopic decortications and simple aspiration is associated with a high recurrence rate because the cyst wall epithelium is responsible for active liquid production.~Purpose:To determine whether microwave ablation is more effective in the treatment of simple renal cysts than conventional laparoscopic decortication.~Method:
The purpose of this study is to determine whether microwave ablation is more effective in the treatment of simple renal cysts than conventional laparoscopic decortication.