Wednesday, March 3, 2010

Nonobstructive Causes of Hydronephrosis

Nonobstructive causes of hydronephrosis include the following:
  • High renal output
  • Ureterectasis: For example from a prior obstruction that has since resolved
  • Vesicoureteral reflux
  • Congenital megacalycosis and megaureter
  • Papillary necrosis: Obstruction due to sloughed papilla
  • Extrarenal pelvis
  • Prune-belly syndrome
  • Beckwith-Wiedemann syndrome: May be related to reflux


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