Transcanal surgery for vestibular schwannomas: a pictorial review of radiological findings, surgical anatomy and comparison to the traditional translabyrinthine approach.
Eur Arch Otorhinolaryngol
; 274(9): 3295-3302, 2017 Sep.
Article
em En
| MEDLINE
| ID: mdl-28597129
ABSTRACT
The most popular approaches for vestibular schwannoma (VS) removal are retrosigmoid, middle cranial fossa and translabyrinthine (TL). All require a certain degree of invasivity, bone removal, or brain manipulation. Recently, the authors described the transcanal transpromontorial approaches (TTA), which allow the inner ear to be accessed directly through the external auditory canal (EAC), either with a microscopic (Expanded TTA, or ExpTTA) or even an exclusive endoscopic technique (Endoscopic TTA, or EndoTTA). The advantages compared to traditional approaches are a direct view of the internal auditory canal (IAC) from lateral to medial, very little or no superficial tissue dissection and very little petrous bone drilling. In summary, from an anatomical point of view, they could be considered to be minimally invasive approaches. The radiologic outcome and the anatomical correspondence of these new approaches are described so as to share with the readers the possible radiologic findings and to compare and differentiate them from classic transpetrous approaches such as the TL approach. LEVEL OF EVIDENCE 4.
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Base de dados:
MEDLINE
Assunto principal:
Neuroma Acústico
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Meato Acústico Externo
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Cirurgia Endoscópica por Orifício Natural
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Orelha Interna
Tipo de estudo:
Diagnostic_studies
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Observational_studies
Limite:
Humans
Idioma:
En
Ano de publicação:
2017
Tipo de documento:
Article