Abstract: Objective To observe ultrasound guided injection of poly Gui alcohol in the clinical efficacy of treatment of renal cysts. Methods 24 cases of renal cysts were underwent ultrasound guided injection of poly Gui alcohol to evaluate the clinical effect. Results 24 cases were first puncture success, out of cyst fluid 20-150ml, yellow transparent to the main cyst, only a few light red, after injection there was no significant systemic reactions and local discomfort after 3 months in 4 patients cyst although the reduced diameter than the first quarter of the puncture, but still larger than 4cm, after repeat puncture and 6-month follow-up, the cysts of 6 case disappeared, the cyst diameter 16 cases were 2-3cm, 1 patients remained greater than 4cm, 1 were lost. All patients had no adverse reactions. Conclusion Ultrasound guided injection of poly Gui alcohol it’s ideal is a good minimally invasive method of treatment, it has slight side effects. In particular, for the patients who can not tolerate surgery.

Key words: renal cysts, ultrasound guided, injection, treatment