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Evaluation of the Vestibular Aqueduct and the Retrolabyrinthine Region by High Resolution Computed Tomography in Patients with Unilateral Mandeacute;niandegrave;reandrsquo;s Disease| Abstract
ISSN: 2161-119X

Otolaryngology: Open Access
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  • Research Article   
  • Otolaryngol (Sunnyvale) 2019, Vol 9(1): 360
  • DOI: 10.4172/2161-119X.1000360

Evaluation of the Vestibular Aqueduct and the Retrolabyrinthine Region by High Resolution Computed Tomography in Patients with Unilateral Ménière’s Disease

Alvarenga EHL1*, Dall’Oglio GP2, Yamashita HK3, Do Vale NABS4 and Cruz OLM5
1Department of Otolaryngology-Head and Neck Surgery, School of Medicine, Federal University of São Paulo, Brazil
2Otorhinolaryngologist by ABORL-CCF Brazilian Association of Otorhinolaryngology and Cervico-facial Surgery, Brazil
3Department of Radiology, Federal University of São Paulo, Brazil
4Department of Otorhinolaryngology, ABORL-CCF Brazilian Association of Otorhinolaryngology, Brazil
5Department of Otorhinolaryngology-Head and Neck Surgery, Federal University of São Paulo, Brazil
*Corresponding Author : Alvarenga EHL, Department of Otolaryngology-Head and Neck Surgery, School of Medicine, Federal University of São Paulo, Brazil, Tel: 55 11 38251154, Fax: 55 11 38251154, Email: [email protected]

Received Date: Jan 17, 2019 / Accepted Date: Feb 06, 2019 / Published Date: Mar 14, 2019

Abstract

Objectives: To systematize the anatomical study of the vestibular aqueduct using high resolution computed tomography (HRCT) and to evaluate the retrolabyrinthine region in patients with unilateral Ménière’s disease (MD).

Methods: The vestibular aqueduct is one of the most studied labyrinth structures in the genesis of endolymphatic hydrops and has a possible anatomic and physiological role in this disease. Twenty patients with unilateral Ménière’s disease and ten normal patients (control group) underwent HRCT of temporal bones. In total 60 ears were analyzed, 20 of them in each of the following groups: GI (ear affected by MD), GII (MD group - ear not affected), GIII (control). The images were analyzed blindly. The vestibular aqueduct was identified and the measurements were acquired in its middle portion and in the external opening. The retrolabyrinth dimension was also measured in these patients. These findings were analyzed and compared between these groups.

Results: The vestibular aqueduct was identified in the ears of 95% of GI, 90% of G II and 100% of G III, and measurements of the width of the middle portion and external opening of vestibular aqueduct were analyzed and showed no statistical difference between the three groups. The retrolabyrinthine dimension was similar between groups G I and G II, but significantly higher in G III (G I=G II<G III).

Conclusion: It is possible to apply the proposed systematization for the evaluation of the vestibular aqueduct by HRCT. The identification and measurement of vestibular aqueduct width did not show statistically significant differences between affected (GI) and unaffected (GII) ears of patients with Ménière’s disease, nor in relation to the control group (GIII). The retrolabyrinthine dimension was significantly higher in the control group (GIII) compared to that of GI and GII

Keywords: Vestibular aqueduct; Temporal bone; Meniere’s disease; Retrolabyrinthine dimension; High resolution computed tomography ; Endolymphatic hydrops; Ear

Citation: Alvarenga EHL, Dall’Oglio GP, Yamashita HK, do Vale NABS, Cruz OLM (2019) Evaluation of the Vestibular Aqueduct and the Retrolabyrinthine Region by High Resolution Computed Tomography in Patients with Unilateral Ménière’s Disease. Otolaryngol (Sunnyvale) 9:360. Doi: 10.4172/2161-119X.1000360

Copyright: © 2019 Alvarenga EHL, et al. This is an open-access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited.

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