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Related Experiment Videos

Clear cell dermatofibroma

B Wambacher-Gasser1, B Zelger, B G Zelger

  • 1Department of Dermatology, University of Innsbruck, Austria.

Histopathology
|January 1, 1997
PubMed
Summary
This summary is machine-generated.

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This study describes a rare clear cell dermatofibroma variant found on lower extremities. Recognizing this skin lesion is crucial for accurate diagnosis, distinguishing it from more serious conditions.

Area of Science:

  • Dermatopathology
  • Oncology
  • Histology

Background:

  • Dermatofibroma is a common skin lesion.
  • A rare variant with clear cell changes presents diagnostic challenges.

Purpose of the Study:

  • To present six cases of clear cell dermatofibroma.
  • To highlight key histological and immunohistochemical features.
  • To emphasize its importance in differential diagnosis.

Main Methods:

  • Histopathological examination of six skin lesions.
  • Immunohistochemical analysis.
  • Electron microscopy.

Main Results:

  • Lesions characterized by >90% clear cells, dermal to subcutaneous.

Related Experiment Videos

  • Fibrohistiocytic origin suggested by epidermal hyperplasia, spindle cells, and infiltrate.
  • Immunohistochemistry showed factor XIIIa and E9 reactivity.
  • Electron microscopy revealed glycogen pools in granular cells.

    • Conclusions:

    • Clear cell dermatofibroma is a distinct entity.
    • Differential diagnosis includes metastatic renal cell carcinoma, xanthogranulomatous reactions, and clear cell sarcoma.
    • Accurate recognition is vital to avoid misdiagnosis of more severe conditions.