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Nephrocalcinosis in Bartter's syndrome.

L Garel1, D Filiatrault, P Robitaille

  • 1Department of Radiology, Hôpital Sainte-Justine, Montreal, Quebec, Canada.

Pediatric Nephrology (Berlin, Germany)
|July 1, 1988
PubMed
Summary

Nephrocalcinosis, a kidney calcification, is common in children with Bartter's syndrome. This study found CT scans detected it in all five patients, highlighting a significant association.

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Area of Science:

  • Pediatric Nephrology
  • Medical Imaging
  • Genetic Kidney Disorders

Background:

  • Bartter's syndrome is a rare inherited renal tubulopathy.
  • Nephrocalcinosis is a known, though not fully understood, complication.
  • The exact mechanism of renal calcification in Bartter's syndrome requires further investigation.

Purpose of the Study:

  • To evaluate the incidence and detection methods of nephrocalcinosis in pediatric Bartter's syndrome.
  • To correlate imaging findings with biochemical parameters like hypercalciuria.

Main Methods:

  • Retrospective analysis of five pediatric patients diagnosed with Bartter's syndrome.
  • Utilized computerized tomography (CT) and ultrasound examinations for nephrocalcinosis assessment.
  • Reviewed patient records for biochemical data, including urinary calcium levels.

Main Results:

  • Nephrocalcinosis was detected by CT in 100% (5/5) of the children.
  • Ultrasound identified nephrocalcinosis in 60% (3/5) of the patients.
  • Hypercalciuria was observed in only one patient (20%), suggesting it's not the primary driver of calcification.

Conclusions:

  • Bartter's syndrome in children is associated with a very high incidence of nephrocalcinosis.
  • CT imaging is a sensitive method for detecting nephrocalcinosis in this condition.
  • The pathogenesis of renal calcification in Bartter's syndrome is complex and not solely explained by hypercalciuria.

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