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  • Title: Treatment of symptomatic simple renal cysts by percutaneous aspiration and ethanol sclerotherapy.
    Author: Mohsen T, Gomha MA.
    Journal: BJU Int; 2005 Dec; 96(9):1369-72. PubMed ID: 16287460.
    Abstract:
    OBJECTIVE: To report our experience with the use of 95% ethanol as sclerotherapy for symptomatic simple renal cysts. PATIENTS AND METHODS: Sixty patients with 64 symptomatic simple renal cysts were treated by ultrasonography (US)-guided percutaneous aspiration and injection of 95% ethanol (31 men and 29 women, mean age 46 years, SD 22). The main presentation was renal pain in 34 patients, renal mass in nine, hypertension in 11 and haematuria in six; 24 cysts were on the right, 32 on the left and four bilateral. Patients were evaluated after 1 month and then every 6 months by clinical assessment, US and intravenous urography. Success was defined as complete when there was total ablation of the cyst and partial when there was a recurrence of less than half the original cyst volume with the resolution of symptoms. Failure was defined as the recurrence of more than half of cyst volume and/or persistent symptoms. RESULTS: After aspiration and ethanol sclerotherapy, there was microscopic haematuria in two patients and low-grade fever (<38.3 degrees C) in two, but no major complications. During a mean (range) follow-up of 19 (14-40) months there was complete cyst ablation in 54 cysts and partial resolution in 10. Pain disappeared or was much improved in all patients. After cyst ablation hypertension was well controlled with no medication in all 11 hypertensive patients and haematuria disappeared in all six affected patients. CONCLUSIONS: Ethanol sclerotherapy for symptomatic simple renal cysts is simple, minimally invasive and highly effective. We recommend it as the first therapeutic option in these patients.
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