Olfactory Groove Meningioma
Last Updated: April 19, 2019
Olfactory groove meningiomas (OGMs) constitute 9–18% of all intracranial meningiomas. These tumors arise in the midline of the anterior cranial fossa at the junction of the cribriform plate and planum sphenoidale.
Tumors arising from this area are in close proximity of tuberculum sellae meningiomas, but these two tumor types behave very differently, primarily with respect to their presentation and mass...