Facial Nerve Schwannoma Extending to Jugular Foramen: A Case Report

Facial nerve schwannoma (FNS) is a benign, slow-growing schwannoma that originates from Schwann cells. Facial nerve schwannoma is the most common tumor of the facial nerve but rare and only accounts for 0.15% to 0.8% of intracranial neurinomas. It may be manifested as asymmetric hearing loss, facial...

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Bibliographic Details
Published in:Ear, nose, & throat journal nose, & throat journal, 2023-05, Vol.102 (5), p.297-300
Main Authors: Yan, Jiangyu, Pan, Fangfang, Zhen, Mengmeng, Ren, Yuan, Hao, Wenjuan, Yin, Min, Wang, Kai
Format: Article
Language:English
Subjects:
Bell Palsy
Case reports
Cranial Nerve Neoplasms - pathology
Face
Facial Nerve - surgery
Facial Paralysis
Female
Humans
Jugular Foramina - pathology
Maxillofacial surgery
Middle Aged
Nervous system
Neurilemmoma - pathology
Otolaryngology
Tumors
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Summary:Facial nerve schwannoma (FNS) is a benign, slow-growing schwannoma that originates from Schwann cells. Facial nerve schwannoma is the most common tumor of the facial nerve but rare and only accounts for 0.15% to 0.8% of intracranial neurinomas. It may be manifested as asymmetric hearing loss, facial palsy, and hemifacial spasm. A 56-year-old woman was transferred to our department, because of pain behind the right ear and spasm of the right lateral muscle for more than 2 years and pulsatile tinnitus for half a year. Based on the preoperative medical history, physical signs, and auxiliary examination, it was diagnosed with jugular foramen (JF) space-occupying lesion. We removed the tumor through the infratemporal fossa type A approach and found that the tumor originated from the facial nerve. After the tumor resection, sural nerve transplantation was performed. The patient demonstrated postoperative facial palsy (House-Brackman grade VI) and was smoothly discharged after good recovery. Facial nerve schwannoma rarely invades the JF, and the most common tumor in the JF is the glomus jugular tumor, followed by the posterior cranial schwannoma. They have common symptoms, making it difficult to obtain a correct diagnosis. Clinical data, medical history, and auxiliary examinations should be carefully analyzed to avoid misdiagnosis or mistreatment. Infratemporal fossa type A approach is an effective method for treating FNS of JF.
ISSN:0145-5613
1942-7522
DOI:10.1177/01455613211000292