Antenatal Urinary Tract Dilation

Key messages

Dilation of the fetal renal collecting system is often benign, but may be caused by serious underlying pathology
The goal of assessment is to identify babies with significant renal or urinary tract abnormalities, while limiting unnecessary radiographic studies
A child with moderate to severe dilation (anterior posterior renal pelvic diameter >10 mm) requires further investigation and early referral to avert long-term complications.

Safer Care Victoria endorses the Paediatric Improvement Collaborative Clinical Practice Guideline:
Antenatal Urinary Tract Dilation >

Clinical Guidance Team

Safer Care Victoria

First published:
February 2018

Reviewed:
October 2024