[The percutaneous x-ray endoscopic surgery of simple kidney cysts]

An endoscopical method of treating solitary renal cysts (RC) > 5 cm in diameter has been used in the Research Institute of Urology since 1989. The method implies percutaneous puncture of the cyst controlled by x-ray television or ultrasound, dilatation of the cystostomy fistula, cystoscopy followed by resection or dissection of the cyst wall with a cold knife or electrosurgically. A total of 38 patients with large solitary cysts have been treated. A 6-12-month follow-up revealed no recurrences. Complications of the surgery were not reported. The method is easy to accomplish, effective and well tolerated.