The ureter in posterior urethral valves.
D002648:Child; D002675:Child, Preschool; D000013:Congenital Abnormalities / Q000150:complications; D003558:Cystoscopy; D006801:Humans; D007223:Infant; D007231:Infant, Newborn; D008297:Male; D011312:Pressure; D014513:Ureter / Q000601:surgery; D014517:Ureteral Obstruction / Q000150:complications / Q000175:diagnosis*; D014521:Urethra / Q000002:abnormalities*; D001743:Urinary Bladder / Q000601:surgery; D014546:Urinary Catheterization; D014567:Urography