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Related Experiment Videos

Proliferative fasciitis: ultrastructure and histogenesis.

L Diaz-Flores1, A I Martin Herrera, R Garcia Montelongo

  • 1Department of Pathology, La Laguna University, Canary Island, Spain.

Journal of Cutaneous Pathology
|April 1, 1989
PubMed
Summary

Proliferative fasciitis (PF) involves fibroblast-like and giant cells. Activated pericytes are hypothesized as the origin of these cells in PF lesions.

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Area of Science:

  • Pathology
  • Cell Biology
  • Dermatopathology

Background:

  • Proliferative fasciitis (PF) is a benign mesenchymal proliferation affecting fascia and subcutaneous tissue.
  • Understanding the cellular origins of PF is crucial for accurate diagnosis and management.

Observation:

  • Two primary cell types were identified in PF lesions: fibroblast-like cells and giant cells.
  • Fibroblast-like cells exhibited myofibroblastic ultrastructural features.
  • Giant cells displayed abundant rough endoplasmic reticulum, irregular filaments, and cytoplasmic lipid droplets, suggesting a role in matrix synthesis.

Findings:

  • Nodular aggregates of proliferating perivascular cells were consistently observed.
  • Transitional cell forms between perivascular cells, fibroblast-like cells, and giant cells were noted.

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  • The study hypothesizes that activated perivascular cells (pericytes) are the progenitor cells for both fibroblast-like and giant cells in proliferative fasciitis.

    • Implications:

    • This finding suggests pericytes may be the cellular source in proliferative fasciitis.
    • Clarifying the cellular origin can refine diagnostic criteria and understanding of PF pathogenesis.
    • Further research into pericyte activation in PF could reveal therapeutic targets.