Anatomical Aspects of the Transseptal Approach to the Sphenoid Sinus

Abstract

Approximately one quarter of the brain’s surface is supported by the frontal, ethmoid, and sphenoid bones. Each of these bones is pneumatized by sinus cavities that in turn derive from the nasal cavity. Not surprisingly, the subject of rhinological anatomy continues to engage the attention of surgeons called on to approach the base of the skull. Transseptal transphenoidal hypophysectomy provides a notable example of the validity of this interest. The first half of the transseptal operation proceeds through normal nasal anatomy.