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[Atrophic involution of juvenile xanthogranulomas].

K Sannier1, A Dompmartin, B Gallet

  • 1Service de Dermatologie, CHU de Caen.

Annales De Dermatologie Et De Venereologie
|January 16, 2004
PubMed
Summary

Juvenile xanthogranuloma typically resolves without scars. This case highlights unusual atrophic scarring following spontaneous regression of juvenile xanthogranuloma lesions.

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Area of Science:

  • Dermatology
  • Pediatric Pathology

Background:

  • Juvenile xanthogranuloma (JXG) is a rare histiocytic disorder of childhood.
  • Typically, JXG undergoes spontaneous resolution without sequelae.

Observation:

  • A newborn male presented with multiple papular, nodular, and necrotic JXG lesions.
  • Histopathological examination revealed foamy cells and Touton giant cells.
  • Langerhans' cell histiocytosis was excluded based on negative S100 protein and CD1a staining.

Findings:

  • At 8 years of age, all JXG lesions had spontaneously regressed.
  • Unusual atrophic scars, matching the size of the original lesions, remained.
  • Comparison with 251 cases indicated that while spontaneous involution is typical, hyperpigmentation, anetoderma, or atrophy can occur.

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Implications:

  • Atrophic scarring in JXG is infrequent and may result from hypodermal inflammation or collagen remodeling anomalies.
  • Understanding these involution patterns is crucial for accurate diagnosis and patient counseling in pediatric dermatology.