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A review of renal scarring in children
1Department of Radiology, Royal Hospital for Sick Children, Yorkhill, Glasgow, UK.
Insights
Children with urinary tract infections need imaging to check for kidney damage. A 99Technetium-dimercaptosuccinic acid (99mTc-DMSA) scan is the most sensitive method for detecting renal scarring and preventing kidney disease.
Area of Science:
- Pediatric Nephrology
- Diagnostic Imaging
- Nuclear Medicine
Background:
- Urinary tract infections (UTIs) in children often necessitate diagnostic imaging to evaluate for renal scarring.
- The optimal imaging modality for detecting renal scarring post-UTI remains a subject of debate among medical professionals.
Purpose of the Study:
- To review and compare the advantages and disadvantages of various diagnostic imaging techniques used in children following a urinary tract infection.
- To establish a consensus on the most effective imaging method for identifying renal scarring and predicting risk.
Main Methods:
- Comprehensive literature review of available studies on diagnostic imaging for pediatric UTIs.
- Comparative analysis of intravenous urography, ultrasound, and 99mTc-DMSA scintigraphy.
Main Results:
- The 99mTc-DMSA scan is identified as the most sensitive diagnostic tool for detecting existing renal scarring.
- 99mTc-DMSA scintigraphy effectively highlights kidneys at risk of developing scarring.
Conclusions:
- Early and widespread adoption of 99mTc-DMSA scintigraphy is recommended for children with UTIs.
- Increased utilization of DMSA scans may reduce the incidence of end-stage renal disease in pediatric populations.
Abstract:
It is now widely accepted that children with a proven urinary tract infection should undergo some form of diagnostic imaging to assess the presence of, or the potential to develop, renal scarring. The type of investigation which should be performed is controversial. Some centres still perform intravenous urography, others rely on ultrasound alone, while others believe that a 99Tc(m)-dimercaptosuccinic acid (99Tc(m)-DMSA) scan is essential. This review discusses the advantages and disadvantages of these techniques by drawing from the extensive literature currently available. The consensus view is that a DMSA scan is the most sensitive method of detecting renal scarring and of highlighting the kidney at risk of developing scarring. It is hoped that wider early use of DMSA scintigraphy will lead to a fall in the number of children who develop end-stage renal disease.
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