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Diffuse calvarial meningioma. Case report and review of the literature

S Anegawa1, T Hayashi, R Torigoe

  • 1Department of Neurosurgery, Institute of Neurosciences, St. Mary's Hospital, Kurume, Fukuoka, Japan.

Journal of Neurosurgery
|May 1, 1999
PubMed

Insights

This study reports an extremely rare calvarial meningioma that caused intracranial hypertension due to dural hyperplasia and sinus occlusion. Surgical decompression significantly improved the patient's symptoms.

Area of Science:

  • Neuro-oncology
  • Neurosurgery
  • Pathology

Background:

  • Calvarial meningiomas are rare tumors arising from the skull bone.
  • This case presents an exceptionally widespread and aggressive meningioma involving both intracranial and extracranial compartments.

Observation:

  • A 77-year-old woman developed a meningioma with extensive symmetrical spread within the calvaria.
  • The tumor exhibited both intracranial and extracranial growth into the scalp.
  • Reactive dural hyperplasia led to intracranial space narrowing and superior sagittal sinus occlusion.

Findings:

  • The dural hyperplasia and sinus occlusion resulted in significant intracranial hypertension.
  • External decompression surgery led to marked symptom resolution.
  • The case highlights unusual pathogenesis and mechanisms of intracranial hypertension in calvarial meningiomas.

Implications:

  • This case expands the understanding of calvarial meningioma presentation and behavior.
  • It underscores the importance of considering dural changes in meningioma-induced hypertension.
  • Findings may inform surgical strategies and management of complex calvarial meningiomas.

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