Fetal hydronephrosis: is there hope for consensus?

Area of Science:

• Pediatric Nephrology
• Fetal Medicine
• Diagnostic Imaging

Background:

• Fetal and neonatal hydronephrosis is a common condition requiring careful evaluation.
• Variations in diagnostic criteria and imaging practices exist globally.
• Standardized approaches are needed for accurate diagnosis and management.

Purpose of the Study:

• To review current data on fetal and neonatal hydronephrosis.
• To correlate controversial findings with international sonography practice differences.
• To propose standardized criteria for fetal renal collecting system dilatation and postnatal investigation.

Main Methods:

• Comprehensive literature review of fetal and neonatal hydronephrosis.
• Analysis of diagnostic criteria and sonographic practices across different countries.
• Development of proposed criteria and guidelines based on synthesized data.

Main Results:

• Identified significant variability in obstetrical sonography practices influencing hydronephrosis diagnosis.
• Highlighted areas of controversy in the interpretation of fetal renal collecting system dilatation.
• Established a framework for consistent criteria and postnatal investigation protocols.

Conclusions:

• Standardized criteria for fetal renal collecting system dilatation are crucial.
• Harmonized postnatal investigation guidelines can improve patient outcomes.
• This review provides a foundation for more consistent management of fetal and neonatal hydronephrosis.