Lateral and Middle Sphenoid Wing Meningiomas

Abstract

Meningiomas account for approximately 13–19% of all intracranial tumors. Meningiomas of the skull base locations constitute 40% of all intracranial meningiomas. Of these, about one half occur in the sphenoid wing.1–3 Sphenoid wing meningiomas then account for more or less 20% of intra-cranial meningiomas and represent a real surgical challenge due to their invasion of the bone and their proximity to main arteries and cranial nerves. Anatomically, the sphenoid wing extends from the anterior clinoid process to the pterion with the greater wing constituting the outer third and the lesser wing the inner two thirds. The greater wing and the lateral half of the lesser wing represent the lateral and middle portions of the sphenoid wing.2–7