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J Korean Neurosurg Soc. 1990 Jul;19(7):1050-1052. Korean. Original Article.
Hwang SN , Mock JH , Kim YB , Choi DY .
Department of Neurosurgery, Chung-Ang University, Seoul, Korea.

Trigeminal neuropathy os characterized by unremitting facial pain, no evident trigger point and facial sensory change. According to Jannetta, in trigeminal neuropathy, the offending artery is not necessarily in contact with the root entry zone(REZ) but any site of the nerve. We have recently experienced a 48-year-old woman with symptoms and signs compatible with trigeminal neuropathy and explored the CP angle. SCA was crossing just anterior to the trigeminal root and one small arterial loop was lying on the pons close to the root entry zone(REZ) but neither of them was in diirect contact with the nerve. Teflon felt was inserted between the arteries and nerve and secured with silk and beriplast for fear that they should contact by changing position. Immediately after the operation the facial pain and pre-existing facial sensory change were completely gone.

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