[Obstruction after uretero-vesical reimplantation in children. Apropos of 40 cases].

Fourteen cases of obstruction after ureteroneocystostomy in children have been cured by surgery between 1972 and 1986; nine patients were referred from outside our hospital. This failure as been observed after reimplantation of simple thin ureter (29 cases) megaureter (7) or duplication (4). The diversity of lesions, of which 52 percent were ischemic stenosis, required surgery without any preconceived idea. A new reimplantation is often necessary, usually with Politano-Leadbetter procedure, and, if necessary, with a hitch-bladder. The operation is successful in 85 percent of patients, but the result is uncertain when the operation is late or when the value of renal parenchymal is initially poor.