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Related Experiment Videos

Pediatric renal artery dysplasia: a morphologic study.

K Devaney1, S P Kapur, K Patterson

  • 1Department of Pathology, Bethesda Naval Hospital, Maryland 20814.

Pediatric Pathology
|July 1, 1991
PubMed
Summary

Pediatric renal artery dysplasia, a cause of artery narrowing, presents in various forms. Medial fibrous dysplasia was most common, often seen with bilateral disease.

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Area of Science:

  • Vascular Pathology
  • Pediatric Nephrology
  • Histopathology

Background:

  • Renal artery stenosis in children can result from dysplasia.
  • Previous classifications of renal artery dysplasia included fibroplasia and hyperplasia.

Purpose of the Study:

  • To histologically examine renal artery dysplasia in pediatric patients.
  • To characterize the types and frequencies of renal artery dysplasia.
  • To investigate associations between dysplasia types and clinical presentation.

Main Methods:

  • Light microscopy examination of renal arteries from 12 pediatric patients.
  • Inclusion of surgical resections and autopsy cases.
  • Clinical data review for patient demographics and associated anomalies.

Main Results:

  • Medial fibrous dysplasia was the most frequent type (6 cases).
  • Perimedial elastic dysplasia was observed in 4 cases, exclusively in bilateral disease.
  • Intimal fibrous dysplasia and medial muscular dysplasia were less common.
  • Extrarenal vascular involvement by dysplasia was noted in autopsy cases.
  • No distinct histological pattern of dysplasia was associated with neurofibromatosis.

Conclusions:

  • Renal artery dysplasia in children exhibits diverse histological patterns.
  • Medial fibrous dysplasia and perimedial elastic dysplasia are significant types.
  • The type of dysplasia may correlate with the laterality of renal artery stenosis.
  • Dysplasia can affect extrarenal vessels.
  • Neurofibromatosis did not show a specific renal artery dysplasia subtype.

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