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Related Experiment Videos

Ossifying dermatofibroma with osteoclast-like giant cells

T T Kuo1, H L Chan

  • 1Department of Pathology, Chang Gung Medical College, Kwei San, Tao Yuan, Taiwan.

The American Journal of Dermatopathology
|April 1, 1994
PubMed
Summary

Dermatofibroma, a common skin tumor, can present with rare variants. This study details a new variant featuring osteoclast-like giant cells and bone formation, expanding knowledge of cutaneous fibrous histiocytoma.

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Area of Science:

  • Dermatopathology
  • Skeletal Biology

Background:

  • Dermatofibroma, also known as cutaneous fibrous histiocytoma, is a frequent benign skin neoplasm.
  • Histologic variations of dermatofibroma are uncommon but documented.
  • Understanding these variants is crucial for accurate diagnosis and classification.

Observation:

  • A novel variant of dermatofibroma was identified in a 58-year-old woman.
  • The lesion presented as a small, brown, hard papule on the anterior leg.
  • Histopathological examination revealed characteristic features of dermatofibroma alongside unusual elements.

Findings:

  • The described dermatofibroma variant exhibited prominent osteoclast-like giant cells.
  • Metaplastic bone formation was a distinct feature within the tumor stroma.

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  • This combination represents a previously unreported histological subtype.

    • Implications:

    • This finding expands the spectrum of known dermatofibroma histological presentations.
    • Recognition of this variant is important for differential diagnosis of cutaneous tumors.
    • Further research may elucidate the specific cellular mechanisms driving bone formation in this context.