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Updated: Sep 5, 2025

Endoscopic Endonasal Trans-sphenoidal Approach: Minimally Invasive Surgery for Pituitary Adenomas
Published on: January 17, 2018
How I do it: cerebellopontine angle epidermoid cyst removal with endoscopic assistance
Martin Côté1, Pierre-Olivier Champagne2,3
1Department of Neurosurgery, Laval University Hospital Center (CHU de Québec - Hôpital Enfant-Jésus), 1401 18ème Rue, Québec, QC, G1J 1Z4, Canada.
Background:
Epidermoid cyst in the cerebellopontine angle (CPA) can involve numerous critical structures. Endoscopic assistance following microscopic removal via a retrosigmoid approach can expand the surgical corridor, allowing for more complete resection.
Method:
We describe in a stepwise fashion the surgical steps for the microscopic removal of an epidermoid cyst of the CPA with endoscopic assistance.
Conclusion:
Endoscopically assisted microscopic removal for CPA epidermoid cysts provides wide access to the CPA and its adjacent structures and shows to be an effective option in selected cases.

