Abstract

• Renal cysts are usually asymptomatic. produce no harm to the kidney and require no treatment.
  Percutaneous cystic puncture is performed only for specific indications including the diagnosis of cysts which are indeterminated with ultrasonography or computerized tomography, and the treatment of symptomatic cysts. But simple aspiration of renal cysts frequently recurred. so a combination of aspiration and sclerotherapy with variable materials can be used.
  We treated 12 cases of renal cyst with aspiration and selerothrapy with 95% ethanol without specific complications the last 33 months period between January 1988 and September 1990. Major(91.7%) of cases showed remarkable reduction in size of renal cyst or disappearance of cyst on follow-up ultrasonography.
  Therfore aspiration and selerotherapy with 95% ethanol is safe and efficient for the treatment of simple renal cyst.