[Repeated surgery in congenital hydronephrosis in children].

During the period from 1963 to 1976 28 patients among the congenital hydronephrosis cases underwent a repeated operation, which was performed within the terms from 13 days to 8 years after the first intervention. Most often the repeated nephrectomy became necessary due to the occurrence of marked changes in the tissues and renal functional loss. The failure of the first surgical correction resulted from tactical errors and gave rise to the development of severe pyelonephritis.