[Ureteral replacement by jejunoplasty. New concepts, new techniques (author's transl)]

New concepts and new techniques permit the introduction in the urinary tract, of long or short segments of jejunum cut in a specific fashion. Their dynamic qualities allow not only perfect adaptation to a normal urinary tract, but also stimulate a rapid recuperation of pathological ureters. In addition to the dynamic qualities, the success of this is due to three main reasons: a good preoperative intestinal preparation; a new digestive suture utilised in the ante-mesenteric suture of the jejunoplasty; and finally, the introduction of a new type of running suture for the end to end anastomosis of ureter to jejunum. The anastomosis being leak-proof, the abdominal morbidity is non existent; we can envisage the suppression of catheters and drains. A preliminary study of three cases demonstrates the possible extension of the technique to long ureteral replacement with anti-reflux bladder reimplantation.