Cochlear patency following translabyrinthine vestibular schwannoma resection: implications for hearing rehabilitation.
J Laryngol Otol
; 133(7): 560-565, 2019 Jul.
Article
em En
| MEDLINE
| ID: mdl-31267888
ABSTRACT
OBJECTIVE:
To examine when cochlear fibrosis occurs following a translabyrinthine approach for vestibular schwannoma resection, and to determine the safest time window for potential cochlear implantation in cases with a preserved cochlear nerve.METHODS:
This study retrospectively reviewed the post-operative magnetic resonance imaging scans of patients undergoing a translabyrinthine approach for vestibular schwannoma resection, assessing the fluid signal within the cochlea. Cochleae were graded based on the Isaacson et al. system (from grade 0 - no obstruction, to grade 4 - complete obliteration).RESULTS:
Thirty-nine patients fulfilled the inclusion criteria. The cochleae showed no evidence of obliteration in 75 per cent of patients at six months, 38.5 per cent at one year and 27 per cent beyond one year. Most changes happened between 6 and 12 months after vestibular schwannoma resection, with cases of an unobstructed cochlear decreasing dramatically, from 75 per cent to 38.5 per cent, within this time.CONCLUSION:
The progress of cochlear obliteration that occurred between 6 and 12 months following vestibular schwannoma resection indicates that the first 6 months provides a safer time window for cochlear patency.Palavras-chave
Texto completo:
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Base de dados:
MEDLINE
Assunto principal:
Procedimentos Cirúrgicos Otológicos
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Doenças Cocleares
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Neuroma Acústico
Tipo de estudo:
Etiology_studies
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Observational_studies
Limite:
Adult
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Aged
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Female
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Humans
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Male
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Middle aged
Idioma:
En
Revista:
J Laryngol Otol
Assunto da revista:
OTORRINOLARINGOLOGIA
Ano de publicação:
2019
Tipo de documento:
Article
País de afiliação:
Reino Unido