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

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