Is voiding cystourethrogram necessary in all cases of antenatal hydronephrosis?

Area of Science:

• Pediatric Urology
• Neonatal Medicine
• Diagnostic Imaging

Background:

• Hydronephrosis is the most common genitourinary anomaly found via obstetric ultrasonography.
• Vesicoureteral reflux (VUR) is associated with 10-12% of antenatal hydronephrosis (AHN) cases.
• Current literature lacks consensus on voiding cystourethrogram (VCUG) indications for AHN.

Purpose of the Study:

• To address the inconsistency in literature regarding VCUG for AHN.
• To investigate the risk associated with varying degrees of AHN and reflux.
• To evaluate the long-term impact of AHN and reflux on kidney function.

Main Methods:

• Analysis of cases with antenatal hydronephrosis.
• Recommendation for initial ultrasound within the first month of life.
• Guidance for further action based on individual case assessment.

Main Results:

• Suggests individualized management for AHN.
• Recommends VCUG and functional studies for persistent moderate to severe AHN.
• Highlights the need for prospective studies on AHN and reflux outcomes.

Conclusions:

• Early ultrasound is crucial for AHN assessment.
• Persistent moderate to severe AHN warrants further investigation with VCUG and functional studies.
• Individualized approach is key in managing pediatric genitourinary anomalies.