
Introduction: They represent the most common kidney mass in the adult; These are true cysts provided with a wall consisting of a monolayer epithelium and containing a liquid most similar to urine. Typically spherical and unilocular are present. They are equipped with a fibrous collagen tissue capsule that sometimes has calcium deposits. They are considered to be acquired. These cysts are often cortical, but there are also midollars. They generally do not communicate with renal pelvis. More often the size varies from 0.5 to 1 cm, but there can be cysts of 3 or 4 cm. The therapeutic approach to these cysts may be variable. Considering the reduced possibility of a neoplastic form, the surgical approach is uncommon and is therefore reserved for those cases where, due to today's diagnostic methods, there is certainty of the existence of a neoplasm. In this study we present percutaneous treatment with its indications and evaluations on the therapeutic efficacy of the method. Materials and Methods: From January 2017 to Nov. 2017 at the AOU Policlinico University of Catania studies, we received our observation n 10 middle age patients 67 (range 65-69) with renal cystic disease. These cases presented a symptom characterized by severe pain at the side of sn (70%) or ds (30%), nausea of periodic food vomiting, with episodes of microematuria, and hypertension. Transcutaneous stinging ecoguidated bite, which in most simple medium-sized cysts were aspirated (60% of cases); and only in cases where some cysts were of a size> 10cm (20% of cases) a sclerosing agent or a contrast medium with cysts of size <4 cm is injected into the cavity to prevent recurrence. Unfortunately, sometimes this was not enough and therefore it was necessary to use open or laparoscopic surgery with Decortication (20% of cases). No drainage was performed with catheterization because of the infectious risks that this procedure can cause. Results: 60% of the cases treated with peritoneal and cystic transplants were <100mm cytological examination excluded the lesion malignancy, and were discarded after 2 hours of treatment, and with antibiotic therapy for 3.4g. Discussion: The first advantage of this peritoneal treatment of simple kidney cysts is to undertake ultrasound therapy by emptying voluminous renal cysts even in critical stages, then injecting alcohol or contrast media to make sclerosing cysts. Conclusions: The aim of this study was to evaluate the efficacy of percutaneous treatment with aspiration needle, under ultrasound (US) or under CT guidance (computerized tomography), in symptomatic symptomatic renal cysts, also of considerable size> 13cm. Percutaneous treatment of symptomatic simple cysts represents in agreement with many authors the gold standard for this pathology.