Suboccipital retrosigmoid approach for resection of cerebellopontine angle tumor

Video Type: CVideo
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Author: Walter Jean
Published:
Specialties: Neurosurgery
Schools: Georgetown University Hospital
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Basic Info

This is a demonstration of the retrosigmoid approach for microsurgical resection of a cerebellopontine angle tumor. Th patient presented with gait disturbance and normal hearing. A suboccipital craniotomy was used for access to the cerebellopontine angle. Using microsurgical technique, the tumor was dissected away from the glossopharyngeal nerve. Pathological analysis confirmed that the tumor was a schwannoma of the glossopharyngeal nerve.

DOI# http://dx.doi.org/10.17797//r3wbfb5hkv

Advanced

Procedure

Suboccipital retrosigmoid approach for resection of cerebellopontine angle tumor

Indications

Mass lesions of the cerebellopontine angle in patients with intact hearing

Contraindications

Instrumentation

Setup

Preoperative Workup

audiogram, MRI with Gadolinium, endoscopy for vocal cord function

Anatomy and Landmarks

internal acoustic meatus, jugular foramen

Advantages/Disadvantages

Advantage: direct access to the cerebellopontine angle
Disadvantage: cerebellum retraction

Complications/Risks

Risks: possible injury to vestibulocochlear, facial, glossopharyngeal, vagus nerves; possible CSF leak

Disclosure of Conflicts

Risks: possible injury to vestibulocochlear, facial, glossopharyngeal, vagus nerves; possible CSF leak

Acknowledgements

References

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