For ureteral lesions without loss of substance our preferences are, at the level of the lesion, either for end-to-end ureteral suture, or antireflux uretero-vesical reimplantation. For ureteral lesions with loss of substance we prefer the psoas bladder, if the bladder is healthy, large and supple, or inter-ureteral anastomosis if the bladder for some reason (radiotherapy, retracted bladder, small "blocked pelvis") is not available. Synthetic ureteral prosthesis may be a rapid and elegant solution in cancer patients with a limited hope of survival. Guided by these principles, we have repaired 10 ureters : 1 by ureterolysis, 2 by end-to-end suture, 3 by inter-ureteral anastomosis, 4 by antireflux uretero-vesico reimplantation. These 10 repairs gave 9 successes. The only failure (end-to-end ureteral suture) was due to our lack of experience, for in a similar case we would now perform an inter-ureteral anastomosis.