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Related Experiment Video

Updated: May 20, 2026

Endoscopic Endonasal Trans-sphenoidal Approach: Minimally Invasive Surgery for Pituitary Adenomas
07:43

Endoscopic Endonasal Trans-sphenoidal Approach: Minimally Invasive Surgery for Pituitary Adenomas

Published on: January 17, 2018

Endoscopic endonasal posterior clinoidectomy.

Danilo Silva1, Moshe Attia, Jothy Kandasamy

  • 1Department of Neurosurgery, New York Presbyterian Hospital, Weill Medical College of Cornell University, New York.

Surgical Neurology International
|July 4, 2012
PubMed
Summary
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Endoscopic endonasal extradural posterior clinoidectomy provides a safe and effective approach to the interpeduncular cistern. This technique enhances visualization for retrosellar pathologies and maximizes resection extent.

Area of Science:

  • Neurosurgery
  • Endoscopic Skull Base Surgery

Background:

  • Posterior clinoidectomy is crucial for transcranial approaches to basilar tip aneurysms and tumors.
  • Its utility in endonasal endoscopic transclival surgery is not well-established.

Purpose of the Study:

  • To describe and evaluate the feasibility of endoscopic endonasal extradural posterior clinoidectomy.
  • To assess its potential for improving surgical exposure.

Main Methods:

  • Bilateral posterior clinoidectomy and dorsum sella removal were performed on five cadaveric heads using an endoscopic endonasal transsphenoidal extradural approach.
  • Techniques involved midline splitting of the dorsum sella, dissection from the cavernous sinus, and fracturing from the petrous apex.

Main Results:

Keywords:
Dorsum sellaendoscopic endonasalextradural posterior clinoidectomyinterpeduncular cisternposterior clinoid processskull base

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  • The endoscopic endonasal extradural posterior clinoidectomy was technically feasible in all specimens.
  • The procedure preserved vital structures, including the pituitary gland.
  • Opening the retrosellar dura provided good visualization of the prepontine and interpeduncular cistern.

Conclusions:

  • Endoscopic endonasal extradural posterior clinoidectomy is a viable technique.
  • It is particularly suited for retrosellar pathology in the interpeduncular cistern.
  • This approach enhances the transclival procedure by improving the field of view and extent of resection.