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KMID : 0942820080070020174
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Journal of Korean Brain Tumor Society
2008 Volume.7 No. 2 p.174 ~ p.178
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The Glossopharyngeal Schwannoma
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Park Chul-Woong
Kwon Taek-Hyun
Park Youn-Kwan
Chung Heung-Seob
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Abstract
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The schwannomas from the lower cranial nerves have rarely been described, because the determination of lower cranial
nerve’s origin is not always possible. The authors report a case of glossopharyngeal schwannoma, where the selective
nerve origin was validated by microsurgical findings. A 35-year-old female presented with gait ataxia and headache. The
preoperative MRI revealed a large cystic mass in the left cerebello-pontine angle, compressing the brain stem. Via the suboccipital route operation, it was demonstrated that the mass was adhered to the paper-like thinned glossopharyngeal nerve near the jugular foramen without association to other lower cranial nerves. In the cisternal portion, the glossopharyngeal nerve could be identified by its rostral entrance to the jugular foramen. A subtotal tumor removal was achieved to avoid damage of the paper-like thinned glosspharyngeal nerve. After surgery, the patient was discharged without any neurological symptoms and has received stereotactic radiation surgery for small remnant tumor.
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KEYWORD
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Intracranial schwannoma, Glossopharyngeal nerve, Jugular foramen
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