Anterior urethral valves: a case report.
D002675:Child, Preschool; D006801:Humans; D007674:Kidney Diseases / Q000517:prevention & control; D008297:Male; D011859:Radiography; D014521:Urethra / Q000002:abnormalities* / Q000000981:diagnostic imaging / Q000601:surgery; D014555:Urination Disorders / Q000209:etiology*