Posterior urethral valves in siblings.
D000293:Adolescent; D002675:Child, Preschool; D000013:Congenital Abnormalities / Q000235:genetics; D006801:Humans; D008297:Male; D014513:Ureter / Q000601:surgery; D014521:Urethra / Q000002:abnormalities*; D014547:Urinary Diversion