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Cystic meningiomas.

B Borovich1, J N Guilburd, Y Doron

  • 1Department of Neurosurgery, Rambam Medical Center, Technion Faculty of Medicine, Haifa, Israel.

Acta Neurochirurgica. Supplementum
|January 1, 1988
PubMed
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Cystic meningiomas, a rare 2% of all meningiomas, present as peritumoral cysts with xanthochromic fluid. Computed tomography (CT) can aid diagnosis, but challenges remain for cystic brain tumors.

Area of Science:

  • Neurosurgery
  • Neuroradiology
  • Pathology

Background:

  • Meningiomas are tumors arising from the meninges.
  • Cystic meningiomas are a rare subtype, accounting for 2% of all meningiomas.
  • Computed tomography (CT) is a key diagnostic tool for intracranial lesions.

Observation:

  • Four cases of cystic meningiomas were identified over a 7-year period.
  • Cysts were consistently peritumoral, with brain tissue forming the cyst wall.
  • Cysts contained xanthochromic, high-protein fluid.

Findings:

  • Tumor locations included parasagittal and pterional regions.
  • Histological patterns varied, including meningotheliomatous, angioblastic, and psammomatous types.
  • CT diagnosis can be challenging due to resemblance to other cystic brain tumors.

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Implications:

  • Preoperative diagnosis of cystic meningioma is possible with CT, especially when solid portions show intense, homogeneous contrast enhancement.
  • The "en plaque" subtype may present diagnostic challenges on CT.
  • Accurate preoperative diagnosis is crucial for surgical planning and patient management.