Central skull base meningioma.
Clinical and radiological features or characteristics of posterior clinoid process (PCP) meningiomas have rarely been described because of their extreme scarcity and terminological confusion.
Geng et al. subdivided the dorsum sellae meningiomas into two groups:
Lesions in this region are primarily of two anatomic types:
Centrally placed meningiomas located between the two posterior clinoid processes (PCPs) and arising from the dorsum sellae or upper clival region – which should be referred to as dorsum sellae or upper clival meningiomas.