Tuberculum sellae [Neurosurgery Wiki]

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====== Tuberculum sellae ======

The [[tuberculum sellae]] is the bony elevation between the [[chiasmatic sulcus]] and the [[sella turcica]]. By definition, the [[limbus sphenoidale]] (which is the anterior margin of the chiasmatic sulcus) is the demarcation between the anterior and [[middle cranial fossa]]. 

===== Anatomy =====

In the [[sphenoid bone]], behind the [[chiasmatic groove]] is an elevation, the tuberculum sellae (or the tubercle of sella turcica). A variable slight to prominent median elevation forming the posterior boundary of the [[prechiasmatic sulcus]] and the anterior boundary of the hypophysial fossa.

A challenging area in [[skull base surgery]] is microsurgery of the tuberculum sellae and sphene-orbital lesions.

{{::anteriorclinoidprocess.jpg|}}

AC: [[anterior clinoid process]]; ICA: [[internal carotid artery]]; LT: [[lamina terminalis]]; ON: [[optic nerve]]; OlN; [[olfactory nerve]]; SW: [[sphenoid wing]]; TS: [[tuberculum sellae]]; A1: A1 segment of the [[Anterior Cerebral Artery]]; A2: A2 segment of the [[Anterior Cerebral Artery]]; M1: M1 segment of the [[Middle Cerebral Artery]]

see http://3dneuroanatomy.com

===== Tuberculum sellae meningioma =====


see [[Tuberculum sellae meningioma]]