title: [Congenital megaureter with a long narrow segment in children].
mesh_terms: D000367:Age Factors; D002648:Child; D002675:Child, Preschool; D004108:Dilatation, Pathologic; D005260:Female; D006801:Humans; D007223:Infant; D008297:Male; D014513:Ureter / Q000002:abnormalities* / Q000473:pathology / Q000601:surgery; D014567:Urography