[Decompression of the urinary tract after plastic surgery of the ureters in children].

A preliminary decompression of dramatically dilated urinary tracts is recommended for obstruction of the ureter as a preparatory step for correcting and plastic operations fulfilled in 227 children. Nephrostomy is preferable in an obstruction of the pelvic-ureteral segment; mega-, hydroureter require nephro-, pyelo- and proximal ureterostomy. In the postoperative period the derivation of urine should be used while there exists a threat of insufficiency of the anastomosis.