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Related Experiment Videos

Dermatofibroma is a clonal proliferative disease.

T C Chen1, T Kuo, H L Chan

  • 1Department of Pathology, Chang Gung University School of Medicine and Chang Gung Memorial Hospital, Kwei San, Tao Yuan, Taiwan.

Journal of Cutaneous Pathology
|February 5, 2000
PubMed
Summary

Dermatofibroma (DF) is a skin condition. Clonal analysis revealed DF is a neoplastic disease, not a reactive process, supporting its classification as a benign fibrous histiocytoma.

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Area of Science:

  • Dermatopathology
  • Oncology
  • Genetics

Background:

  • Dermatofibroma (DF) is a common skin lesion.
  • Its classification as a neoplastic growth or reactive process remains debated.
  • Neoplastic processes are characterized by clonality.

Purpose of the Study:

  • To investigate the clonal nature of dermatofibroma.
  • To determine if DF represents a neoplastic or reactive skin process.

Main Methods:

  • Analysis of 13 DFs and 2 hypertrophic scars from female patients.
  • Clonal analysis using the methylation pattern of the X-chromosome linked androgen-receptor gene (HUMARA).
  • Comparison of allelic band reduction in lesional versus nonlesional skin tissues after Hha I digestion.

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Main Results:

  • Eight informative DFs exhibited a significant reduction in one allelic band, indicative of clonality.
  • One hypertrophic scar showed a polyclonal pattern, suggesting a reactive process.
  • The findings differentiate DF from reactive scar tissue.

Conclusions:

  • Dermatofibroma is a clonal proliferative disease.
  • The results favor a neoplastic origin for DF.
  • DF should be considered a neoplastic process rather than a reactive one.