[Ureteral duplications with a blind branch. Apropos of 4 cases]

Blind-ending ureteral buds result from a more or less complete duplication of the ureter in which the development of one of the branches is arrested before reaching renal mesenchyma. These malformations are rare, and no more than one hundred cases have been reported. We report four new cases in children. All were studied because of urinary infection and cystogram was diagnostic. All patients were operated upon, the blind ureter was resected, and the remaining complete ureter reimplanted in three cases.