non-vascular intervention symptomatic simple renal cyst ablation using single session ultrasound guided percutaneous tetracycline sclerotherapy

Abstract

Background and Objectives: Image guided tetracycline sclerotherapy for symptomatic renal cyst is simple, safe and minimally invasive procedure; however, there is no standardized control trial in this environment. In this study we report our experiences in treatment of symptomatic renal cyst by ultrasound guided drainage and tetracycline sclerotherapy

Materials and Methods: We retrospectively reviewed 8 consecutive patients (6 males and 2 females, mean age 46 year, SD 9.6) treated for symptomatic simple renal cyst with ultrasound guided drainage and tetracycline sclerotherapy. Patients are evaluated clinically and
sonographically before the procedure, a month after and 3 months thereafter. The ablations were done in prone position, following
administration of local anesthesia. Treatment is considered clinically successful if there is complete resolution of symptom, partial if more than 50% of the symptoms disappear and failure if less than 50% of the symptoms disappear. Treatment is considered sonographically successful if there is complete ablation of the cyst, partial when there was reoccurrence of less than 50% original cyst volume, and failure when there is reoccurrence more than 50% of the total cyst volume.

Results: The clinical presentation includes loin pain, renal angle tenderness in all the patients and renal mass in 2 (25%) patients. The
cysts are bilateral in 2 (25%) patients and there are multiple cysts in one kidney in 3 (37.5%) patients. Both clinically and sonographically successful treatment were achieved in 6 (75%) patients, 1 (12.5% have clinically partial resolution and 1 (12.5%) sonographically treatment failure.

Conclusions: Ultrasound guided simple renal cyst drainage and tetracycline sclerotherapy show a highly promising result, but there is need for further large scale control trial.