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Pilomatrix carcinoma and multiple pilomatrixomas

T A McCulloch1, S Singh, D W Cotton

  • 1Department of Histopathology, Royal Hallamshire Hospital, Sheffield, U.K.

The British Journal of Dermatology
|February 1, 1996
PubMed
Summary
This summary is machine-generated.

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This study details a rare aggressive pilomatrixoma case in a 44-year-old male. The tumor exhibited unusual hair follicle differentiation and aggressive features, including muscle and vascular invasion.

Area of Science:

  • Dermatopathology
  • Oncology

Background:

  • Pilomatrixoma is a benign skin appendage tumor.
  • Malignant variants are rare but documented.

Observation:

  • A 44-year-old male presented with multiple pilomatrixomas.
  • One tumor showed rapid growth and recurrence.
  • Histology revealed hair matrix differentiation with trichoepithelioma-like features.

Findings:

  • The aggressive pilomatrixoma demonstrated numerous mitoses and cellular pleomorphism.
  • Infiltration into subcutaneous skeletal muscle was observed.
  • Vascular invasion was a significant finding.

Implications:

  • This case highlights the potential for aggressive behavior in pilomatrixoma.

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  • It underscores the importance of thorough histological evaluation for diagnosis.
  • Further research into aggressive pilomatrixoma variants is warranted.