Anterior skull base Meningiomas

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Nomenclature

  • Olfactory Groove Meningiomas (OGM)
    Nomenclature of anterior skull base meningiomas
  • Planum Sphenoidale Meningiomas
  • Tuberculum Sellae Meningioma (TSM)

Clinical Presentation

  • Personality Δ
  • H/A
  • Sz's
  • Visual deficits
  • Anosmia
  • Foster-Kennedy syndrome of unilateral optic atrophy and contralateral papilledema

Comparison of OGM and TSM

Factor OGM TSM
Location Cribriform, frontosphenoid suture Planum sphenoidale, tuberculum sellae
Blood supply Ant & pos ethmoidals, middle meningeal, ophthalmic (meningeal branch, ACA & ACoA) Pos ethmoidal (ACA & ACoA)
Olfactory nerves Superolat Inferolat
Optic nerve/chiasm Inferolat Superolat
ACA Pos. to posterosuperior Posterosuperior
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