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Trichothiodystrophy associated with urologic malformation and primary hypercalciuria

J Malvehy1, J Ferrando, J Soler

  • 1Department of Dermatology, Hospital Clinic, Barcelona, Spain.

Pediatric Dermatology
|January 22, 1998
PubMed
Summary

Trichothiodystrophy (TTD), a rare hair disorder, is linked for the first time to urologic malformations and primary hypercalciuria. This case highlights TTD

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Area of Science:

  • Genetics and rare diseases
  • Dermatology and human physiology
  • Pediatric medicine

Background:

  • Trichothiodystrophy (TTD) is a rare genetic disorder characterized by brittle hair with low sulfur content.
  • TTD is often associated with a wide spectrum of systemic abnormalities affecting multiple organ systems.
  • Previous reports have documented TTD's association with ichthyosis, developmental delays, and dysmorphic features.

Observation:

  • A patient presented with congenital ichthyosis, intellectual disability, and facial dysmorphia.
  • The patient exhibited a complex urologic malformation and primary hypercalciuria.
  • Microscopic hair analysis revealed trichoschisis and a defective cuticle, with radiographic microanalysis confirming low sulfur content.

Findings:

  • This case represents the first documented association of Trichothiodystrophy with urologic malformations and primary hypercalciuria.

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  • The patient's clinical presentation included characteristic hair abnormalities and systemic features of TTD.
  • Diagnostic confirmation was achieved through specialized hair microscopy and radiographic microanalysis.

    • Implications:

    • This finding expands the known phenotypic spectrum of Trichothiodystrophy.
    • It suggests a potential link between TTD and renal/urologic developmental pathways.
    • Further research is warranted to elucidate the genetic and molecular mechanisms underlying this novel association.