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Meningiomas: histogenesis and classification. A comparative morphological study.

H D Mennel1, J Zinngrebe, U Berweiler-Nippert

  • 1Department of Neuropathology, Medical Center of Pathology, University of Marburg, FRG.

Zentralblatt Fur Allgemeine Pathologie U. Pathologische Anatomie
|January 1, 1988
PubMed
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This study analyzed 80 meningiomas using morphological and in-vitro methods. Results reveal a common cellular makeup across meningioma subtypes, with vimentin and fibronectin as key tissue markers.

Area of Science:

  • Neuropathology
  • Oncology
  • Cell Biology

Background:

  • Meningiomas are tumors arising from the meninges.
  • Understanding their cellular composition is crucial for classification and treatment.

Purpose of the Study:

  • To investigate the cellular makeup and tissue marker expression in various meningioma subtypes.
  • To assess the utility of in-vitro growth and immunohistochemistry in characterizing meningiomas.

Main Methods:

  • Analysis of 80 meningiomas using smear preparations, frozen sections, and conventional histology.
  • Short-term in-vitro cell culture and proliferation studies.
  • Electron microscopy and immunohistochemical staining for tissue markers (vimentin, fibronectin, cytokeratin, S-100 protein) using the PAP method.

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Main Results:

  • Rapid cell proliferation was observed in most in-vitro cultures.
  • Electron microscopy showed quantitative differences, with folded membranes and intermediate filaments as key features.
  • Vimentin was expressed in nearly all meningiomas, and fibronectin in about half. Both were present in in-vitro grown tumor cells.

Conclusions:

  • Meningiomas, despite subtype variations, share a common and uniform cellular composition.
  • Tissue markers like vimentin and fibronectin are consistently expressed and can be detected in cultured cells.
  • The precise classification of meningiomas requires further discussion regarding their developmental origins.