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Clinical patterns of paediatric urolithiasis
1Department of Urology, Alder Hey Children's Hospital, Liverpool.
Insights
Pediatric urolithiasis varies by cause, with infection stones common in males and metabolic stones showing high recurrence. Understanding these patterns aids in managing childhood kidney stones.
Area of Science:
- Pediatric Urology
- Nephrology
- Medical Microbiology
Background:
- Urolithiasis in children presents diverse clinical patterns and etiologies.
- Understanding these differences is crucial for effective management and prevention of pediatric kidney stones.
Purpose of the Study:
- To retrospectively analyze the clinical patterns and etiologies of urolithiasis in 270 pediatric patients.
- To characterize stone location, composition, recurrence rates, and associations with specific etiological factors.
Main Methods:
- Retrospective study of 270 pediatric stone patients.
- Analysis of clinical data including age, sex, stone location, stone analysis, and recurrence.
- Categorization of stones based on etiology: infection, anatomical, metabolic, and idiopathic.
Main Results:
- Infection stones (struvite) were common in males, often linked to Proteus infection.
- Anatomical stones (e.g., associated with pelviureteric junction obstruction) showed high recurrence.
- Idiopathic stones resembled adult patterns (ureteral, calcium oxalate), while metabolic stones (calcium phosphate, cystine) were renal with the highest recurrence rate.
- Infection stones occurred earliest, followed by anatomical, idiopathic, and metabolic stones.
Conclusions:
- Pediatric urolithiasis exhibits distinct patterns based on etiology, influencing presentation and recurrence.
- Infection, anatomical, metabolic, and idiopathic stones have unique characteristics in children.
- Tailored management strategies are needed for different pediatric stone types to improve outcomes and reduce recurrence.
Abstract:
A series of 270 paediatric stone patients was studied retrospectively according to the clinical pattern of urolithiasis (age and sex, stone location, stone analysis, recurrence rate) and aetiology of stone disease (infection, anatomical, metabolic or idiopathic). Infection stones occurred earliest and more commonly in males and were usually upper tract struvite calculi related to Proteus infection. Anatomical stones were most commonly associated with pelviureteric junction (PUJ) obstruction and had a high recurrence rate, despite surgical correction of obstruction. Idiopathic stones most resembled those found in adult urolithiasis by virtue of occurring latest, being sited in the ureter more often and being more frequently composed of calcium oxalate. Metabolic stones were most frequently calcium phosphate or cystine and virtually all were renal. They comprised the smallest group but had the highest recurrence rate.