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Echogenic renal pyramids in children.

S Jequier1, B S Kaplan

  • 1Department of Radiology, Montreal Children's Hospital, Quebec, Canada.

Journal of Clinical Ultrasound : JCU
|February 1, 1991
PubMed
Summary
This summary is machine-generated.

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Increased medullary echogenicity in children often indicates nephrocalcinosis, frequently caused by medications like furosemide or vitamin D. Other causes include metabolic disorders and fibrosis, important for differential diagnosis.

Area of Science:

  • Pediatric Nephrology
  • Diagnostic Imaging
  • Medical Research

Background:

  • Increased medullary echogenicity on renal ultrasound (US) is a finding in pediatric patients.
  • Nephrocalcinosis is a significant cause of this echogenicity, with various underlying etiologies.

Purpose of the Study:

  • To investigate the causes of increased medullary echogenicity in children.
  • To determine the prevalence and types of nephrocalcinosis and other conditions presenting with this ultrasound finding.

Main Methods:

  • Retrospective analysis of 68 pediatric patients with increased medullary echogenicity on renal ultrasound.
  • Categorization of causes into iatrogenic (medication-induced) and non-iatrogenic (metabolic, congenital, etc.).

Main Results:

Related Experiment Videos

  • Nephrocalcinosis was present in 42 of 68 children.
  • Iatrogenic causes (furosemide, vitamin D therapy) accounted for 30 cases; non-iatrogenic causes (hypercalcemia, RTA) for 12.
  • In 26 patients, other conditions like urate/protein deposits, fibrosis, or vascular congestion explained the echogenicity.

Conclusions:

  • Increased medullary echogenicity in children frequently signifies nephrocalcinosis, often iatrogenically induced.
  • Differential diagnosis should include metabolic disorders and structural changes when nephrocalcinosis is less likely.
  • These findings aid in diagnosing the cause of hyperechoic renal pyramids in pediatric patients.