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Membranous changes in primary malignant CNS lymphomas.

F Slowik1, K Jellinger

  • 1Department of Neuropathology, National Institute of Neurosurgery, Budapest, Hungary.

Acta Neuropathologica
|January 1, 1989
PubMed
Summary
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Ultrastructural analysis of primary malignant CNS lymphomas identified abnormal membranous structures in some tumors. Their significance is uncertain due to their presence in various conditions, possibly indicating viral reactions or cellular changes.

Area of Science:

  • Neuro-oncology
  • Cellular Ultrastructure
  • Pathology

Background:

  • Primary malignant CNS lymphomas are rare tumors.
  • Understanding their cellular characteristics is crucial for diagnosis and treatment.
  • Ultrastructural features can provide insights into tumor biology.

Purpose of the Study:

  • To investigate the ultrastructural morphology of primary malignant CNS lymphomas.
  • To identify and characterize abnormal intracytoplasmic and intranuclear membranous structures.
  • To evaluate the potential significance of these findings.

Main Methods:

  • Ultrastructural examination using electron microscopy.
  • Analysis of 17 cases of primary malignant CNS lymphoma.
  • Detailed morphological description of identified structures.

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Main Results:

  • Abnormal membranous structures were observed in 6 out of 17 tumors.
  • These structures were frequently associated with the endoplasmic reticulum or perinuclear envelope.
  • Common findings included tubuloreticular inclusions and paired cisternae; less common were microtubules, lamellar bodies, and intranuclear inclusions.

Conclusions:

  • The observed membranous structures in CNS lymphomas are not specific.
  • Their presence may represent cellular reactions to viral infections or general cellular activity/degeneration.
  • Further research is needed to determine their precise role and significance.