title: Management of initial pyeloplasty failure.
mesh_terms: D000293:Adolescent; D002648:Child; D002675:Child, Preschool; D005260:Female; D006801:Humans; D007674:Kidney Diseases / Q000601:surgery; D007682:Kidney Pelvis / Q000601:surgery*; D008297:Male; D012008:Recurrence