Ultrasound guided drainage of symptomatic benign renal cysts: value of ethanol injection

Seventy patients with symptomatic simple renal cysts were enrolled in this study. Their mean age was 41 [30-70] years. They were managed either by ultrasound guided drainage mono-therapy [40 patients, group A] or drainage with single injection of ethyl alcohol [97%] concentration [30 patients, group B]. All patients were followed up with abdominal ultra-sonography at monthly intervals in the first three months, then every three months for the next 18 months. Complete disappearance of renal cysts was achieved in 24 patients of group A and in 26 patients of group B. It was concluded that ultrasound guided drainage of symptomatic simple renal cysts is attractive minimally invasive procedure. The injection of sclerosing agent as ethyl alcohol after drainage improved the outcome and reduced the recurrence rate