Primary calvarial meningiomas

Area of Science:

• Neurosurgery
• Oncology
• Pathology

Background:

• Meningiomas are tumors arising from the meninges, the membranes surrounding the brain and spinal cord.
• Primary calvarial meningiomas originate directly from the skull bone, a rare occurrence.
• Extracranial extension without subdural involvement presents unique diagnostic and surgical challenges.

Observation:

• Two cases of primary calvarial meningioma are presented.
• Both tumors were epidural in location, growing outward from the skull.
• Neither case involved the subdural space, distinguishing them from more common meningiomas.

Findings:

• The reported cases highlight the potential for calvarial meningiomas to grow extracranially.
• Surgical management requires careful consideration of the extracranial component.
• Review of literature provides context for these rare presentations.

Implications:

• These cases expand the understanding of meningioma behavior and growth patterns.
• Accurate diagnosis and tailored surgical approaches are crucial for optimal patient outcomes.
• Further research into the pathogenesis of extracranial meningioma growth is warranted.