Res Vestib Sci.  2022 Sep;21(3):75-79. 10.21790/rvs.2022.21.3.75.

Impairment of Vestibular Function in Patients with Vestibular Schwannoma According to the Presence of Dizziness

• Lee Y
• Lee SA
• Lee ES
• Lee TK
• Lee JD

• KMID: 2534296
• DOI: http://doi.org/10.21790/rvs.2022.21.3.75

Abstract

Objectives
Vestibular schwannoma (VS) is a benign Schwann cell-derived slow growing tumor originating from the vestibular nerve. Here, we aimed to investigate the correlation between the presence of the dizziness symptoms and several vestibular function test results.
Methods
We analyzed 32 patients who diagnosed with VS from 2010 to 2021 in our hospital. Caloric test, cervical vestibular-evoked myogenic potential (cVEMP) test, and video head impulse test (vHIT) were analyzed.
Results
Age, sex, pure tone audiometry, and tumor size did not show any statistical significance according to the presence or absence of dizziness. There was also no association between the presence of dizziness symptom or dizziness type and the results of the caloric test, vHIT, and cVEMP test, respectively. However, patients with dizziness had a higher rate of tumors confined to the inner auditory canal than those without dizziness.
Conclusions
In this study, the rate of complaints of dizziness was higer in patients with intracanalicular VS. The diagnostic role of vestibulsr function tests in VS is limited. The dissociation of the results of caloric test, vHIT, and cVEMP test suggest that these test are complementary.

Keyword

Acoustic neuroma; Vestibular function tests; Dizziness; 전정신경초종; 전정기능검사; 어지럼