Analyzing
antenatally diagnosed hydronephrosis

  • The most frequent urinary tract anomaly detected on prenatal ultrasounds
  • Observed in 1-4.5% of pregnancies
  • The most frequent causes are:
    - Urinary tract obstructions
    - Vesicoureteral reflux (VUR)
    - Nonobstructive dilation or transient dilation
  • Caused by anatomic lesions or functional disturbances.
  • Occurs twice as often in males than in females and can be bilateral in 30% of cases.
  • Resolution during the third trimester or early postnatal period is reported in 6–67% of patients.
Obstructive uropathies | 2. Diagnosing obstructive uropathy
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