Which test is used to evaluate vesicoureteral reflux after a suspected urinary tract infection in a child?

Which test is used to evaluate vesicoureteral reflux after a suspected urinary tract infection in a child?

• A. Voiding cystourethrogram
• B. Renal ultrasound
• C. Abdominal X-ray
• D. MRI

Answer: (A)

Vesicoureteral reflux is best evaluated with a voiding cystourethrogram. In this test, contrast is introduced into the bladder and X-ray imaging is used during filling and, especially, during urination to see if contrast moves backward from the bladder into the ureters and kidneys. It not only confirms whether reflux is present but also grades its severity and can reveal related bladder or outlet issues. Renal ultrasound can show kidney size, hydronephrosis, or scarring, which are important for overall kidney health, but it does not reliably demonstrate reflux itself, so it isn’t a substitute when assessing VUR. Abdominal X-ray and MRI aren’t standard tests for detecting reflux. Therefore, the voiding cystourethrogram provides the most direct and definitive assessment of vesicoureteral reflux after a suspected UTI in a child.

Vesicoureteral reflux is best evaluated with a voiding cystourethrogram. In this test, contrast is introduced into the bladder and X-ray imaging is used during filling and, especially, during urination to see if contrast moves backward from the bladder into the ureters and kidneys. It not only confirms whether reflux is present but also grades its severity and can reveal related bladder or outlet issues.

Renal ultrasound can show kidney size, hydronephrosis, or scarring, which are important for overall kidney health, but it does not reliably demonstrate reflux itself, so it isn’t a substitute when assessing VUR. Abdominal X-ray and MRI aren’t standard tests for detecting reflux. Therefore, the voiding cystourethrogram provides the most direct and definitive assessment of vesicoureteral reflux after a suspected UTI in a child.