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Suboccipital retrosigmoid approach for resection of cerebellopontine angle tumor

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

Suboccipital retrosigmoid approach for resection of cerebellopontine angle tumor
Mass lesions of the cerebellopontine angle in patients with intact hearing
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audiogram, MRI with Gadolinium, endoscopy for vocal cord function
internal acoustic meatus, jugular foramen
Advantage: direct access to the cerebellopontine angle Disadvantage: cerebellum retraction
Risks: possible injury to vestibulocochlear, facial, glossopharyngeal, vagus nerves; possible CSF leak
Risks: possible injury to vestibulocochlear, facial, glossopharyngeal, vagus nerves; possible CSF leak
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