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Updated: Jan 29, 2026

Methods for the Self-integration of Megamolecular Biopolymers on the Drying Air-LC Interface
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Xanthine urolithiasis.

Tahar Gargah1, Afif Essid, Aymen Labassi

  • 1Department of Pediatrics, Charles Nicolle Hospital, Bab Saadoun, Tunisia. kitomora@yahoo.fr

Saudi Journal of Kidney Diseases and Transplantation : an Official Publication of the Saudi Center for Organ Transplantation, Saudi Arabia
|March 16, 2010
PubMed
Summary

Hereditary xanthinuria type I, a rare genetic disorder affecting purine metabolism, can cause kidney stones in children. Early diagnosis and treatment are crucial to prevent severe kidney damage.

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Area of Science:

  • Biochemistry
  • Genetics
  • Pediatric Nephrology

Background:

  • Hereditary xanthinuria type I is a rare genetic disorder caused by xanthine oxidase deficiency, impacting purine metabolism.
  • It is an uncommon but significant cause of urolithiasis in pediatric populations.

Observation:

  • Two pediatric cases of xanthine urolithiasis are presented.
  • The first involved an 8-year-old boy with hematuria and a xanthine stone causing hydronephrosis; his brother was asymptomatic.
  • The second involved a 5-year-old boy with abdominal pain and hematuria, leading to nephrectomy due to end-stage pyelonephritis caused by a xanthine stone.

Findings:

  • Both patients exhibited low plasma and urinary uric acid levels with markedly elevated xanthine and hypoxanthine concentrations.
  • Histological examination of calculi confirmed pure xanthine composition in both cases.

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Implications:

  • Xanthine urolithiasis is typically benign and manageable with alkalinization, hydration, and dietary purine restriction.
  • Undiagnosed or asymptomatic stones can lead to severe kidney damage, including parenchymal destruction, nephrectomy, and renal failure, highlighting the importance of timely diagnosis and intervention.