Nephrocalcinosis and urolithiasis in children

Area of Science:

• Pediatric Nephrology
• Urology
• Medical Genetics

Background:

• Adult urolithiasis incidence is rising in industrialized nations.
• Childhood nephrocalcinosis and urolithiasis lack established incidence rates.
• Unlike adults, pediatric cases often result from genetic or metabolic disorders.

Purpose of the Study:

• To highlight the distinct causes of nephrocalcinosis and urolithiasis in children compared to adults.
• To emphasize the importance of identifying underlying genetic and metabolic factors in pediatric kidney diseases.
• To underscore the need for early diagnosis and intervention to prevent long-term renal damage.

Main Methods:

• Review of current literature on pediatric urolithiasis and nephrocalcinosis.
• Analysis of risk factors including hypercalciuria, hypocitraturia, hyperoxaluria, and renal tubular diseases.
• Evaluation of diagnostic approaches involving urine and blood analysis.
• Consideration of associated symptoms like growth retardation and bone demineralization.

Main Results:

• Genetic/metabolic disorders are primary drivers in pediatric nephrocalcinosis/urolithiasis.
• Hypercalciuria is a frequent risk factor, but other conditions must be excluded.
• Preterm infants represent a high-risk group due to immature kidneys and medication.
• Diagnostic evaluation identifies underlying pathomechanisms in over 75% of pediatric patients.

Conclusions:

• Early and comprehensive evaluation is essential for diagnosing pediatric urolithiasis and nephrocalcinosis.
• Interventions like increased fluid intake, crystallization inhibitors, and specific medications are vital.
• Timely treatment prevents stone recurrence, progressive nephrocalcinosis, and renal function decline.