Short Original Communications

Acta Neuropathologica

, Volume 56, Issue 2, pp 151-156

Central neurocytoma

An electron-microscopic study of two cases
  • J. HassounAffiliated withLaboratoire de Neuropathologie, Faculté de Médecine
  • , D. GambarelliAffiliated withLaboratoire de Neuropathologie, Faculté de Médecine
  • , F. GrisoliAffiliated withLaboratoire de Neuropathologie, Faculté de Médecine
  • , W. PelletAffiliated withLaboratoire de Neuropathologie, Faculté de Médecine
  • , G. SalamonAffiliated withLaboratoire de Neuropathologie, Faculté de Médecine
  • , J. F. PellissierAffiliated withLaboratoire de Neuropathologie, Faculté de Médecine
  • , M. TogaAffiliated withLaboratoire de Neuropathologie, Faculté de Médecine

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Summary

The authors report two cases of a rare tumor in adults which were inserted on the fornix and caused a frontal syndrome. By light microscopy, the tumors, highly calcified, were composed of small clear cells forming dense areas in a patchy fibrillary stroma. Electron microscopy revealed a striking neuronal differentiation with numerous synapses. These tumors, for which the term neurocytomas was proposed, were compared with the other CNS neuronal tumors described in the literature.

Key words

Central neuronal tumor Third ventricle tumor Synapses Electron microscopy