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  • Meningiomas are the most common extrinsic brain tumors and follow glioblastoma multiforme (GBMs) as one of the most common intracranial brain tumors.
  • Are a type of slow-growing tumor that forms in the meninges (thin layers of tissue that cover and protect the brain and spinal cord). Meningiomas usually occur in adults.
  • The incidence among females is about twice as many as males.
  • These are typically slow growing tumors and symptoms depends on the location.
  • About %70 of meningiomas have monosomy 22.
  • These tumors have hormone receptors for estrogen.
  • Meningioma incidence is increased by radiation.
  • %90 of meningiomas are located intra-cranially and the remaining are found in the spine.


Meningioma Case presentation:

  • 77 year old man with new onset seizure
  • MRI scan of his brain showed a large left sphenoid wing  tumor radigraphically consistent with meningioma.
  • He underwent frameless stereotactic orbitozygomatic craniotomy and gross total resection of this tumor.


Intra-operative Image Guidance.



He was neurlogically completely intact and was discharged from the hospital in a few good health.  His MRI postoperatively showed complete resection of the tumor.







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