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Related Experiment Videos

Extraorbital giant cell angiofibroma.

B M Wiebe1, J O Gottlieb, S Holck

  • 1Department of Pathology, Hillerød Hospital, Denmark.

APMIS : Acta Pathologica, Microbiologica, Et Immunologica Scandinavica
|August 10, 1999
PubMed
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Giant cell angiofibroma, a rare fibrovascular tumor, can occur outside the orbit. This tumor shows distinct immunological markers and is best treated with conservative excision.

Area of Science:

  • Pathology
  • Oncology
  • Dermatology

Background:

  • Recent descriptions of fibrovascular mesenchymal proliferations highlight their diverse nature.
  • Giant cell angiofibroma was initially identified as an orbital lesion.

Observation:

  • This report details an extraorbital giant cell angiofibroma, expanding its known anatomical distribution.
  • Immunohistochemical analysis reveals CD 34, bcl-2, and vimentin positivity, with negativity for epithelial, muscle markers, and S-100.

Findings:

  • Giant cell angiofibroma exhibits unique histological features differentiating it from similar tumors.
  • Immunological profile supports its classification as a distinct entity, separate from giant cell fibroblastoma and solitary fibrous tumor.

Implications:

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  • Giant cell angiofibroma is not limited to the orbit, requiring broader diagnostic consideration.
  • Complete, conservative excision is the recommended treatment, with no reported metastases.
  • Understanding the distinct characteristics of this tumor aids in accurate diagnosis and patient management.