- 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 days.in good health. His MRI postoperatively showed complete resection of the tumor.