alexa Microsurgical anatomy of the sellar region.
Medicine

Medicine

Otolaryngology: Open Access

Author(s): Renn WH, Rhoton AL Jr

Abstract Share this page

Abstract Fifty adult sellae and surrounding structures were examined under magnification with special attention given to anatomical variants important to the transfrontal and transsphenoidal surgical approaches. The discovered variants considered disadvantageous to the transsphenoidal approach were as follows: 1) large anterior intercavernous sinuses extending anterior to the gland just posterior to the anterior sellar wall in 10\%; 2) a thin diaphragm in 62\%, or a diaphragm with a large opening in 56\%; 3) carotid arteries exposed in the sphenoid sinus with no bone over them in 4\%; 4) carotid arteries that approach within 4 mm of midline within the sella in 10\%; 5) optic canals with bone defects exposing the optic nerves in the sphenoid sinus in 4\%; 6) a thick sellar floor in 18\%; 7) sphenoid sinuses with no major septum in 28\% or a sinus with the major septum well off midline in 47\%; and 8) a presellar type of sphenoid sinus with no obvious bulge of the sellar floor into the sphenoid sinus in 20\%. Variants considered disadvantageous to the transfrontal approach were found as follows: 1) a prefixed chiasm in 10\% and a normal chiasm with 2 mm or less between the chiasm and tuberculum sellae in 14\%; 2) an acute angle between the optic nerves as they entered the chiasm in 25\%; 3) a prominent tuberculum sella protruding above a line connecting the optic nerves as they entered the optic canals in 44\%; and 4) carotid arteries approaching within 4 mm of midline within or above the sella turcica in 12\%. This article was published in J Neurosurg and referenced in Otolaryngology: Open Access

Relevant Expert PPTs

Relevant Speaker PPTs

Recommended Conferences

Peer Reviewed Journals
 
Make the best use of Scientific Research and information from our 700 + peer reviewed, Open Access Journals
International Conferences 2017-18
 
Meet Inspiring Speakers and Experts at our 3000+ Global Annual Meetings

Contact Us

 
© 2008-2017 OMICS International - Open Access Publisher. Best viewed in Mozilla Firefox | Google Chrome | Above IE 7.0 version
adwords