Between October 1986 and January 1989, 66 percutaneous nephrostomy (PCN) were performed in 47 patients in our clinic. Nine cases were children and the remainder were adults. Seven of nine children had bilateral vesico-ureteric reflux and the other two cases had idiopathic megaureter 19 of our adult patients had bladder tumor, nine patients had cervix ca. three cases had carcinoma of the prostate, two cases had tuberculosis pyenephrose, two patients had stone-way, three cases had lymphoma and another two cases tumor of the ureter. Local anesthesia was used in all cases except in six children. PCN was done as an emergency procedure to relieve obstruction of the upper urinary tract (n:43). In four patients PCN was performed for temporary urinary diversion. Antegrade pyelography enabled the diagnosis of coexisting ureteric tumors in two patients with bladder tumor.