====== Anterior skull base meningioma classification ====== [[Sphenoid wing meningioma]] are one half. [[Frontobasal meningioma]]s, are the other one half. Midline [[anterior skull base meningioma]]s include [[olfactory groove meningioma]]s (OGMs), [[Tuberculum Sellae meningioma]]s (TSMs), and [[planum sphenoidale meningioma]]s (PSMs). [[Meningioma]]s of the [[anterior cranial fossa]] represent 12%–20% of all [[intracranial meningioma]]s. ==== Mohr classification ==== {{::mohr_classification.jpg?400|}}