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Juvenile hyaline fibromatosis and infantile systemic hyalinosis: a unifying term and a proposed grading system

Ahmad Nofal1, Mohammad Sanad, Magda Assaf

  • 1Dermatology Department, Faculty of Medicine, Zagazig University, Zagazig, Egypt. ahmadnofal5@hotmail.com

Journal of the American Academy of Dermatology
|April 7, 2009
PubMed

Insights

Juvenile hyaline fibromatosis and infantile systemic hyalinosis share features suggesting they are the same disorder. Researchers propose "hyaline fibromatosis syndrome" with mild, moderate, and severe subtypes.

Area of Science:

  • Dermatology
  • Genetics
  • Pediatrics

Background:

  • Juvenile hyaline fibromatosis and infantile systemic hyalinosis are rare genetic disorders.
  • Previous suggestions indicate these conditions may represent varying severities of a single disease entity.

Observation:

  • Two pediatric cases presented with similar pink papulonodular skin lesions and gingival hyperplasia.
  • Case 1 exhibited systemic involvement including contractures, fractures, diarrhea, infections, and growth retardation.
  • Case 2 presented with localized swellings without systemic complications.

Findings:

  • Radiological findings included fractures and osteolytic lesions (Case 1) and soft tissue masses (Case 2).
  • Both patients showed anemia; Case 1 also had hypogammaglobulinemia, hypoalbuminemia, and electrolyte imbalance.
  • Histopathological and ultrastructural analyses confirmed hyalinized fibrous tissue in the dermis for both cases.

Implications:

  • The shared clinical and histopathological features support classifying juvenile hyaline fibromatosis and infantile systemic hyalinosis as manifestations of the same underlying disorder.
  • A unified terminology, "hyaline fibromatosis syndrome," encompassing mild, moderate, and severe subtypes is proposed.
  • This reclassification aims to standardize diagnosis and facilitate further research into these rare conditions.
Abstract

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