Pelvi-ureteric obstruction in children.
D000293:Adolescent; D002648:Child; D002675:Child, Preschool; D005260:Female; D006801:Humans; D006869:Hydronephrosis / Q000000981:diagnostic imaging* / Q000209:etiology; D007223:Infant; D008297:Male; D011859:Radiography; D014517:Ureteral Obstruction / Q000150:complications / Q000000981:diagnostic imaging*