Prognostic Significance of Preoperative Geometric Changes in the Internal Acoustic Canal for Hearing Preservation in Vestibular Schwannoma Surgery.
Hearing preservation
Internal acoustic canal
Vestibular schwannoma
Journal
World neurosurgery
ISSN: 1878-8769
Titre abrégé: World Neurosurg
Pays: United States
ID NLM: 101528275
Informations de publication
Date de publication:
Dec 2019
Dec 2019
Historique:
received:
30
05
2019
revised:
22
08
2019
accepted:
24
08
2019
pubmed:
8
9
2019
medline:
24
1
2020
entrez:
8
9
2019
Statut:
ppublish
Résumé
This study focused on the changes in the internal acoustic canal (IAC) caused by vestibular schwannomas (VSs) and their prognostic significance for postoperative hearing outcome. A total of 125 consecutive cases of VS were included. We used a neuronavigation software to perform the following measurements on both the tumor side and healthy side: volume of the IAC (VIAC), maximal diameter of the IAC (DIAC), and length of the IAC (LIAC). A statistical analysis was realized using Spearman correlation to test the correlation of the morphometric measure of the IAC and postoperative hearing. Multivariate analysis was performed to test the impact of measurements of the IAC and preoperative hearing on postoperative hearing. The mean VIAC on the tumor side and on the healthy side was 0.271 and 0.169 cm Enlargement of the VIAC and DIAC are negative prognostic factors for hearing preservation. Reasons may be long-standing compression of the auditory nerve and an increased vulnerability of the inner ear structures during the drilling of the IAC.
Identifiants
pubmed: 31493598
pii: S1878-8750(19)32350-2
doi: 10.1016/j.wneu.2019.08.194
pii:
doi:
Types de publication
Journal Article
Langues
eng
Sous-ensembles de citation
IM
Pagination
e223-e227Informations de copyright
Copyright © 2019 Elsevier Inc. All rights reserved.