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Updated: May 9, 2026

Point-of-Care Kidney and Genitourinary Ultrasound in Adults: Image Acquisition
Published on: June 21, 2024
[Urolithiasis in children: diagnostic difficulties]
Insights
Pediatric urolithiasis is rising due to diet. Many children with stone risk factors show symptoms, but imaging may miss subtle signs, highlighting the need for careful diagnosis.
Area of Science:
- Pediatric Nephrology
- Urology
- Diagnostic Imaging
Context:
- Increasing incidence of pediatric urolithiasis in developed nations.
- Dietary changes as a primary contributing factor.
- Prevalence of urinary solute abnormalities in children.
Purpose:
- To investigate the discrepancy between suggestive symptoms and imaging findings in pediatric urolithiasis.
- To highlight the limitations of current diagnostic imaging techniques.
- To emphasize the importance of considering urolithiasis in children with abdominal pain and family history.
Summary:
- Children with urinary abnormalities predisposing to stone formation but normal imaging present symptoms 9x more often than overt disease.
- Limitations in renal ultrasound and X-ray sensitivity, sub-detectable urinary crystals, and post-calculi passage imaging contribute to this gap.
- Proper urine collection technique is crucial for accurate diagnosis.
Impact:
- Suggests a higher prevalence of subclinical or early-stage urolithiasis in children than previously recognized.
- Underscores the need for heightened clinical suspicion for urolithiasis, even without classic symptoms.
- May inform revised diagnostic protocols for pediatric abdominal pain.
Abstract:
The incidence of urolithiasis in children has been steadily increasing in developed countries mainly due to changes in dietary habits. The occurrence of symptoms suggestive of urolithiasis in children with urinary solute abnormalities predisposing to stone formation but with normal renal ultrasound and X-ray plain film is approximately 9 times higher than the occurrence of overt stone disease. This discrepancy may depend on several factors, for example: the limited sensitivity of these methods of imaging, the presence of urinary crystals that, while not detectable with imaging, injure bladder epithelium, in addition to imaging studies performed after the passage of calculi giving negative results. Correct technique during urine collection is also essential for diagnosis. Urolithiasis must be suspected in the face of abdominal pain even central or diffuse pain in younger children when there is a positive family history even though specific urinary symptoms such hematuria and dysuria may be lacking.
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