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An ultrastructural and immunohistochemical study of central neurocytoma

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Abstract

A case of central neurocytoma was studied by electron microscopic and immunohistochemical methods. Immunohistochemical examinations showed the tumor cells to be positive for neuron-specific enolase, sporadically positive for synaptophysin, and negative for glial fibrillary acidic protein. The Ki-67 (MIB-1) positive index value for the tumor cells was a low 1.5%. Ultrastructurally, thin cytoplasmic processes of tumor cells showed differentiation to neuronal cells containing parallel bundles of microtubules and abortive synapses with dense core vesicles and/or clear vesicles. Microvessels composed of endothelial cells without fenestrations and tight junctions in the endothelial clefts appeared in fibrillary stromas as revealed by light microscopy. Neurosecretory granules in thin cell processes may have been secreted around microvessels.

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Authors and Affiliations

  1. Department of Neurosurgery, Nihon University School of Medicine, Nihon University Hospital, 1-8-13, Kanda Surugadai, Chiyoda-ku, 101, Tokyo, Japan

    Mitsusuke Miyagami, Atsushi Miyagi & Takashi Tsubokawa

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  1. Mitsusuke Miyagami
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  2. Atsushi Miyagi
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  3. Takashi Tsubokawa
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Miyagami, M., Miyagi, A. & Tsubokawa, T. An ultrastructural and immunohistochemical study of central neurocytoma. Med Electron Microsc 28, 163–171 (1995). https://doi.org/10.1007/BF02347959

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  • DOI: https://doi.org/10.1007/BF02347959

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