The fine structure of ependymoma (Japanese)

A. Hirano, T. Matsui, H. M. Zimmerman

Research output: Contribution to journalArticle

6 Scopus citations

Abstract

The tumor cells form an unoriented mass rather than a layered structure. Most of the cells have no ependymal specialization, such as cilia, microtubules, etc. Instead, they assume a primitive undifferentiated appearance with large nuclei and abundant free ribosomes. Occasionally, however, certain cells tend to form a ring around a narrow lumen like space within the mass. Such spaces are virtually filled with microvilli and, occasionally, even cilia arising from the surrounding cells. Elaborate desmosomes decorate the apposing surfaces of such cells and basal bodies are present within the cytoplasm. In addition, the tumor cells often display glial filaments, glycogen granules and microtubules, similar to the cells comprising astrocytomas. As is well known, astrocytomas and ependymomas are often found mixed in the same tumor.

Original languageEnglish (US)
Pages (from-to)557-563
Number of pages7
JournalNeurological Surgery
Volume3
Issue number7
StatePublished - Jan 1 1975

ASJC Scopus subject areas

  • Surgery
  • Clinical Neurology

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    Hirano, A., Matsui, T., & Zimmerman, H. M. (1975). The fine structure of ependymoma (Japanese). Neurological Surgery, 3(7), 557-563.