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Multiple intracranial subarachnoid osteomas.

M Akiyama1, T Tanaka, Y Hasegawa

  • 1Department of Neurological Surgery, Atsugi City Hospital, Kanagawa, Japan. masa-aky@sta.att.ne.jp

Acta Neurochirurgica
|July 28, 2005
PubMed
Summary

This report details a rare case of multiple intracranial subarachnoid osteomas in a young man. Surgical removal was successful, offering insights into the origin of these unusual bone tumors.

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Area of Science:

  • Neurosurgery
  • Neuropathology
  • Radiology

Background:

  • Intracranial osteomas are rare tumors, typically lacking connection to the dura or skull.
  • Subarachnoid osteomas are exceptionally uncommon, with limited documented cases.

Observation:

  • A 24-year-old male presented with chronic headaches and was diagnosed with multiple ossified lesions in the right frontal lobe via neuro-imaging.
  • These lesions compressed the underlying cerebral hemisphere, necessitating surgical intervention.

Findings:

  • Surgical removal involved a right frontal craniotomy, with masses dissected from the brain surface.
  • The osteomas adhered to superficial cortical veins, requiring their sacrifice during resection.
  • Pathological examination confirmed the diagnosis of osteoma.

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Implications:

  • This case represents the first documented instance of multiple intracranial subarachnoid osteomas.
  • Findings suggest a potential origin from primitive mesenchymal cells migrating within the subarachnoid space along cerebral blood vessels.