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  • Title: Inflammatory pseudotumor of the facial nerve as a cause of recurrent facial palsy: case report.
    Author: Yanagihara N, Segoe M, Gyo K, Ueda N.
    Journal: Am J Otol; 1991 May; 12(3):199-202. PubMed ID: 1882969.
    Abstract:
    This is a report of a case presenting recurrent facial palsy due to inflammatory pseudotumor of the facial nerve. The patient was a 41-year-old man suffering from facial palsy on the right side once in 1983, which recurred in 1988. The initial facial palsy was cured after conservative treatments including steroid administration. Three months after the recurrence, the same treatments were attempted without noticeable effect. He was referred to our clinic two and half months later. Electromyographic examination indicated pronounced denervation of the facial nerve. Imaging study including high resolution CT and MRI revealed a mass lesion around the geniculate ganglion. Facial neuroma was initially suspected. Surgical exploration revealed a tumor involving the geniculate ganglion and the horizontal portion of the facial nerve. The tumor was resected through a combined transmastoid and middle cranial fossa approach, followed by nerve grafting. Histologically, the tumor proved to be an inflammatory pseudotumor originating from the nerve sheath, although the etiologic factor causing the inflammation was not verified.
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