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Normal voiding does not exclude posterior urethral valves
  1. Giuseppa Patti1,2,
  2. Samuele Naviglio1,2,
  3. Marco Pennesi1,
  4. Massimo Gregori1,
  5. Valentina Moressa1,
  6. Alessandro Ventura1,2
  1. 1Institute for Maternal and Child Health IRCCS “Burlo Garofolo”, Trieste, Italy
  2. 2University of Trieste, Trieste, Italy
  1. Correspondence to Dr Valentina Moressa, Institute for Maternal and Child Health IRCCS “Burlo Garofolo”, University of Trieste, Trieste, Italy; valentina.moressa{at}

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A 6-week-old male infant with a prenatal diagnosis of bilateral hydronephrosis from the 20th week of gestation was seen for diagnostic workup. At 38 weeks of gestation, right and left renal pelvis anterior–posterior diameters measured 11 and 7 mm, respectively, with dilated calyces. Renal cortex thickness, amniotic fluid volume and bladder volume were within normal limits. He was born at 39 weeks via an uncomplicated vaginal delivery, and urinated …

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