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Updated: Jun 17, 2026
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Microvascular Decompression: Salient Surgical Principles and Technical Nuances
Published on: July 5, 2011
Extradural anterior transpetrosal approach: how I do it
Thibault Passeri1, Gabriel C Heemann2, Michelle Grouls2
1Department of Neurosurgery, Lariboisière Hospital, Assistance Publique des Hôpitaux de Paris (APHP), University of Paris Cité, 2 Rue Ambroise Paré, Paris, 75010, France. thibault.passeri@aphp.fr.
Acta Neurochirurgica
|June 15, 2026
Summary
The extradural anterior transpetrosal approach offers a direct surgical path to challenging petroclival and brainstem lesions. This technique minimizes brain retraction, enabling safer and more effective treatment of these deep-seated tumors.
Area of Science:
- Neurosurgery
- Skull Base Surgery
- Anatomical Studies
Background:
- Petroclival and brainstem lesions present significant surgical access challenges.
- Their deep location and proximity to vital neurovascular structures complicate treatment.
- Minimizing brain retraction is crucial for safe surgical outcomes.
Purpose of the Study:
- To detail the extradural anterior transpetrosal approach for petroclival and brainstem lesions.
- To illustrate the technique's application and extensions.
- To highlight its utility in complex skull base surgery.
Main Methods:
- Step-by-step description of the standard extradural anterior transpetrosal approach.
- Illustrations from cadaveric dissections and surgical cases.
- Surgical video demonstrating application in a petroclival meningioma case.
Main Results:
- The approach provides a direct "looking-down" trajectory.
- Minimal brain retraction is achieved.
- Demonstrated efficacy in a case of petroclival meningioma with posterolateral extension.
Conclusions:
- The extradural anterior transpetrosal approach is a valuable surgical route.
- It offers safe and effective access to petroclival lesions.
- This technique facilitates treatment in a complex anatomical region.
