Diaphragma sellae
Script error: No such module "Infobox".Template:Template otherTemplate:Main other The diaphragma sellae or sellar diaphragm is a small, circular sheet of dura mater forming an (incomplete) roof over the sella turcica and covering the pituitary gland lodged therein. The diaphragma sellae forms a central opening to accommodate the passage of the pituitary stalk (infundibulum)[1] which interconnects the pituitary gland and the hypothalamus.
The diaphragma sellae is an important neurosurgical landmark.[1]
Anatomy
Boundaries
The diaphragma sellae has a posterior boundary at the dorsum sellae and an anterior boundary at the tuberculum sellae along with the two small eminences (one on either side) called the middle clinoid processes.
Variation
The opening formed by the diaphragma sellae varies greatly in size between individuals.[1]
Clinical significance
Pituitary tumours may grow to extend superiorly beyond the diaphragma sellae.[1] Violation of the diaphragma sellae during an endoscopic endonasal transsphenoidal pituitary tumor resection will result in a cerebrospinal fluid leak.Script error: No such module "Unsubst".
Additional images
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Dura mater and its processes exposed by removing part of the right half of the skull, and the brain.Dura mater and its processes exposed by removing part of the right half of the skull, and the brain.
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Human brain dura mater (reflections)
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References
Template:Reflist Public domain This article incorporates text in the public domain from Template:Wikidatathe 20th edition of Gray's Anatomy (1918) Template:Main other
External links
- Anatomy photo:28:14-0101 at the SUNY Downstate Medical Center - "Cranial Fossae: Diaphragma Sellae"
- Imaging at wfns.org
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