orbital meningioma

Meningiomas of the orbit are uncommon. They can be divided into two broad categories:

• primary orbital meningioma (a form of ectopic meningioma)
  • almost all are optic nerve meningiomas
  • rarely ectopic rests of arachnoid cells give rise to orbital meningiomas separate from the optic nerve sheath
• secondary orbital meningioma
  • represents 70-90% of orbital meningiomas
  • direct extension of intracranial meningiomas into the orbit

Siehe auch:

• Meningeom Nervus opticus
• intracranial meningiomas
• ektopes Meningeom