What follow-up investigations are necessary for a child with a UTI and abnormal renal ultrasound findings?

Guideline-aligned answer with reasoning, red flags and references. Clinically reviewed by Dr Kola Tytler MBBS CertHE MBA MRCGP.

Posted: 16 August 2025 Guideline-Aligned (High Confidence) Clinically Reviewed
Dr Kola Tytler MBBS CertHE MBA MRCGPClinical Lead • iatroX

Follow-up investigations for a child with a urinary tract infection and abnormal renal ultrasound findings include a dimercaptosuccinic acid (DMSA) scintigraphy scan 4 to 6 months after the acute infection to detect renal parenchymal defects .

If the ultrasound shows dilatation or other abnormalities, consider a micturating cystourethrogram (MCUG) to assess for vesicoureteral reflux (VUR) .

In cases where upper UTI is suspected or confirmed, power Doppler ultrasound or DMSA scan may be used to confirm or exclude acute upper UTI .

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