Congenital ureteral strictures.
D004106:Dilatation; D006801:Humans; D007682:Kidney Pelvis / Q000033:anatomy & histology / Q000473:pathology* / Q000601:surgery; D011859:Radiography; D014513:Ureter / Q000033:anatomy & histology / Q000000981:diagnostic imaging / Q000473:pathology*; D014517:Ureteral Obstruction / Q000151:congenital* / Q000473:pathology / Q000601:surgery