[Ectopic insertions of single ureters in children. Apropos of 9 cases]

The authors present 9 cases of ectopic implantation of a single ureter in children. Ureteric ectopia is part of a congenital anomaly of the whole of the urinary tract, which explains the incidence of renal ectopia and associated dysplastic lesions of the renal parenchyma. The authors stress the importance of ultrasonography and, more recently, the CT scan for the localisation of the kidney homolateral to the ureteral ectopia. An analysis of the treatment and the results demonstrates the contrast between the unilateral forms which are easily treated and which have a good prognosis and the bilateral forms which are more difficult to treat and have a less favourable prognosis.