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'Congenital' hydronephrosis: limitations of diagnosis by fetal ultrasonography
A M Rickwood1, J V Harney, M O Jones
1Department of Paediatric Urology, Royal Liverpool Children's Hospital, UK.
Objective:
To determine whether children presenting clinically with pelvi-ureteric junction obstruction had fetal hydronephrosis.
Patients And Methods:
Forty-three children, born during or after 1985, presented clinically with pelvi-ureteric junction obstruction. Records of the maternal pregnancies were reviewed with reference to the findings of any fetal ultrasonography.
Results:
In 25 patients fetal ultrasonography was performed at or beyond 30 weeks' gestation (mean 33.2). None had significant fetal hydronephrosis.
Conclusion:
Hydronephrosis due to pelvi-ureteric obstruction is not necessarily congenital and patients presenting clinically may differ inherently from those detected fetally.