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Intraventricular malignant meningioma: one case report.

Nan Fu Chen1, Ging Yau Lin, Yeou Chih Wang

  • 1Department of Neurosurgery, Taichung Veterans General Hospital, ROC, Taichung, Taiwan. chen0668@ms26.hinet.net

Journal of Clinical Neuroscience : Official Journal of the Neurosurgical Society of Australasia
|September 2, 2003
PubMed
Summary

This case study describes a rare intraventricular malignant meningioma. Unusual MRI findings, including T1 hyperintensity and T2 hypointensity, aided in its preoperative differential diagnosis.

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Area of Science:

  • Neurology
  • Oncology
  • Radiology

Background:

  • Primary intraventricular malignant meningiomas are rare central nervous system tumors.
  • Accurate preoperative diagnosis of intraventricular tumors is crucial for effective management.

Observation:

  • A 74-year-old male presented with progressive left limb weakness and dizziness.
  • Initial head MRI suggested glioblastoma multiforme or metastatic lesion.
  • Histological diagnosis confirmed a primary malignant meningioma.

Findings:

  • The intraventricular meningioma exhibited atypical MRI characteristics: hyperintensity on T1-weighted images (T1WI) and hypointensity on T2-weighted images (T2WI).
  • These unusual findings are potentially attributed to intratumoral hemorrhage.
  • Few cases of intraventricular malignant meningioma with detailed MRI descriptions exist in the literature.

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Implications:

  • This case highlights the importance of considering meningioma in the differential diagnosis of intraventricular tumors, even with atypical imaging features.
  • The described MRI characteristics may assist in the preoperative differentiation of intraventricular tumors.
  • Further research into the imaging features of rare intraventricular tumors is warranted.