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Primary diffuse leptomeningeal gliosarcomatosis.

Yosuke Watanabe1, Takuhiro Hotta, Hiroyuki Yoshioka

  • 1Department of Neurosurgery and Institute for Clinical Research, National Hospital Organization, Kure medical center, 3-1 Aoyama, Kure City, Hiroshima, Japan. watanabey@kure-nh.go.jp

Journal of Neuro-Oncology
|July 14, 2007
PubMed
Summary

This case study presents a rare instance of primary diffuse leptomeningeal gliomatosis diagnosed as gliosarcoma. The patient showed diffuse leptomeningeal thickening and enhancement without a primary brain tumor.

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Area of Science:

  • Neuro-oncology
  • Neuropathology

Background:

  • Primary diffuse leptomeningeal gliomatosis (PDLG) is a rare condition.
  • Gliosarcoma is an aggressive subtype of glioblastoma.

Observation:

  • A 48-year-old woman presented with neurological symptoms including headache, numbness, and visual disturbances.
  • Imaging revealed diffuse leptomeningeal thickening and enhancement, with hydrocephalus but no clear intraparenchymal lesion.
  • Cytology showed atypical cells, leading to leptomeningeal biopsy.

Findings:

  • Histological examination confirmed gliosarcoma of the leptomeninges.
  • Autopsy revealed leptomeningeal and spinal cord gliosarcoma without an underlying parenchymal tumor.
  • This represents the first reported case of primary diffuse leptomeningeal gliosarcomatosis.

Implications:

  • Highlights the importance of considering rare diagnoses in neuro-oncology.
  • Suggests leptomeningeal spread can occur without a detectable primary parenchymal tumor.
  • Underscores the aggressive nature and poor prognosis of gliosarcoma in this presentation.