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Updated: Jul 26, 2026

Ultrasonography of the Adult Male Urinary Tract for Urinary Functional Testing
Published on: August 14, 2019
Excretory urography and cystourethrography in the evaluation of children with urinary tract infection
Insights
For children with a first urinary tract infection (UTI), voiding cystourethrography (VCU) is more effective than intravenous pyelography (IVP). VCU reveals significant anatomical abnormalities and vesico-ureteral reflux (VUR) in over 50% of cases.
Area of Science:
- Pediatric Nephrology
- Diagnostic Imaging
- Urology
Background:
- Urinary tract infections (UTIs) are common in children.
- Accurate diagnosis and management are crucial to prevent renal scarring and long-term complications.
- Radiological imaging plays a key role in evaluating the urinary tract after a UTI episode.
Purpose of the Study:
- To compare the diagnostic yield of intravenous pyelography (IVP) and voiding cystourethrography (VCU) in children with a first UTI.
- To determine the incidence of anatomical abnormalities and vesico-ureteral reflux (VUR) in this population.
Main Methods:
- A retrospective study of 191 children with a first UTI.
- All children underwent both IVP and VCU.
- Analysis of findings from both imaging modalities, focusing on prognostic and therapeutic significance.
Main Results:
- Only 1.5% of IVPs showed significant positive findings.
- VCU revealed anatomical abnormalities in 50.7% of children.
- Vesico-ureteral reflux (VUR) was diagnosed in 40.3% of cases, with varying grades.
Conclusions:
- VCU is a more valuable investigation than IVP for identifying significant urinary tract abnormalities after a first UTI in children.
- The high incidence of VUR and other abnormalities highlights the importance of VCU in guiding management and preventing complications.
Abstract:
One hundred and ninety-one children with a first episode of urinary tract infection (UTI) underwent intravenous pyelography (IVP) and voiding cystourethrography (VCU). Only three children (1.5%) had positive findings in the IVP that were of prognostic significance and were confined to that particular investigation alone. In contrast, 97 (50.7%) of the VCUs showed anatomical abnormalities. Vesico-ureteral reflux (VUR) of varying grades was diagnosed in 77 children (40.3%). These findings stress the importance of radiological investigation of the urinary tract after the first incidence of UTI, but suggest that IVP will give information of therapeutic and/or prognostic value in a small number of cases.
Related Concept Videos
Urinary Tract Infection III: Diagnostic Studies and Interprofessional Care
Imaging Studies II: Ultrasonography
Imaging Studies V: Intravenous Urography and Retrograde Pyelography
Imaging Studies VI: Voiding Cystourethrography and Cystography
Urodynamic Studies: Uroflowmetry
Urologic Endoscopic Procedure: Cystoscopic Examination

