sellar diaphragm

di·a·phrag·ma sel·'lae

[TA]
a fold of dura mater extending transversely across the sella turcica and roofing over the hypophyseal fossa; it is perforated in its center for the passage of the infundibulum.
References in periodicals archive ?
The base of the tumor was located in the sellar diaphragm. The patients awoke and made movements shortly after the surgery.