Surgical Findings to Differentiate Between Facial Nerve Schwannoma and Vestibular Schwannoma
Clinical and Experimental Otorhinolaryngology
; : 157-159, 2014.
Article
em En
| WPRIM
| ID: wpr-93552
Biblioteca responsável:
WPRO
ABSTRACT
OBJECTIVES: Facial nerve schwannomas may be misdiagnosed as vestibular schwannomas (VSs) if the tumor is confined to the internal auditory canal (IAC) without involvement the geniculated ganglion or labyrinthine segment of facial nerve. Because facial nerve schwannomas may be misdiagnosed as VSs, we investigated the differences between the two. METHODS: The study included 187 patients with a preoperative diagnosis of VS. Of these, six were diagnosed with facial nerve schwannomas during surgery. We reviewed the preoperative evaluations and surgical findings of facial nerve schwannomas mimicking VSs. RESULTS: No useful preoperative predictors are available for facial nerve schwannomas mimicking VSs. Facial nerve schwannomas are usually confined to the IAC. After opening the dura of the IAC, a facial nerve schwannoma can be diagnosed after identifying a normal-appearing nerve located lateral to the tumor. When this was the case, we performed facial nerve preservation surgery or decompression. CONCLUSION: Facial nerve schwannomas can be differentiated from VSs by identifying specific findings during surgery.
Palavras-chave
Texto completo:
1
Base de dados:
WPRIM
Assunto principal:
Neuroma Acústico
/
Descompressão
/
Cistos Glanglionares
/
Diagnóstico
/
Nervo Facial
/
Neurilemoma
Tipo de estudo:
Diagnostic_studies
/
Prognostic_studies
Limite:
Humans
Idioma:
En
Revista:
Clinical and Experimental Otorhinolaryngology
Ano de publicação:
2014
Tipo de documento:
Article