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Antenatal hydronephrosis with postnatal resolution: how long are postnatal studies warranted?
J M Gatti1, B H Broecker, H C Scherz
1Division of Pediatric Urology, Emory University School of Medicine and Children's Healthcare of Atlanta, Atlanta, Georgia 30345, USA.
Urology
|May 30, 2001
Summary
Antenatal hydronephrosis may resolve initially but can reappear later due to ureteropelvic junction obstruction. This highlights the need for extended follow-up imaging in affected infants.
Area of Science:
- Pediatric Urology
- Neonatal Imaging
Background:
- Antenatal hydronephrosis is common, often resolving spontaneously.
- Postnatal imaging typically confirms resolution in many cases.
Observation:
- Two cases presented with antenatal hydronephrosis.
- Initial postnatal studies showed apparent normalization of kidney function.
Findings:
- Both patients developed late-onset hydronephrosis at 6 and 22 months.
- Ureteropelvic junction obstruction was the cause, requiring surgery.
Implications:
- Suggests the need for prolonged postnatal surveillance.
- Challenges the assumption of permanent resolution after initial normalization.
- Informs follow-up protocols for antenatal hydronephrosis.