| Diaphragma sellae | |
|---|---|
 Tentorium cerebelli seen from above. (Diaphragma sellae labeled at upper left.) | |
| Details | |
| Identifiers | |
| Latin | diaphragma sellae |
| TA98 | A14.1.01.107 |
| TA2 | 5378 |
| FMA | 78540 |
| Anatomical terminology | |
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[edit]
Boundaries[edit]
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[edit]
The opening formed by the diaphragma sellae varies greatly in size between individuals.[1]
Clinical significance[edit]
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.[citation needed]
Additional images[edit]
-
Dura mater and its processes exposed by removing part of the right half of the skull, and the brain. -
Human brain dura mater (reflections)
References[edit]
- ^ a b c d Standring, Susan (2020). Gray's Anatomy: The Anatomical Basis of Clinical Practice (42nd ed.). New York. p. 398. ISBN 978-0-7020-7707-4. OCLC 1201341621.
{{cite book}}: CS1 maint: location missing publisher (link)
This article incorporates text in the public domain from page 814 of the 20th edition of Gray's Anatomy (1918)
External links[edit]
- Anatomy photo:28:14-0101 at the SUNY Downstate Medical Center - "Cranial Fossae: Diaphragma Sellae"
- Imaging at wfns.org
