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Updated: May 7, 2026
A Unified Methodological Framework for Vestibular Schwannoma Research
Published on: June 20, 2017
Differentiating cerebellopontine angle meningioma from schwannoma using caloric testing and vestibular-evoked
Chia-Hung Su1, Chang-Mu Chen, Yi-Ho Young
1Department of Otolaryngology, Catholic Cardinal Tien Hospital, Fu-Jen Catholic University, Taipei, Taiwan.
Objective:
This study utilized audiometry, and caloric, ocular vestibular-evoked myogenic potential (oVEMP) and cervical VEMP (cVEMP) tests to differentiate between cerebellopontine angle (CPA) meningioma and schwannoma.
Patients And Methods:
Eleven CPA meningioma patients with mean tumor size 2.8±1.4 cm and another 11 CPA schwannoma patients with mean tumor size 2.7±1.0 cm were enrolled in this study. All patients underwent a battery of audiovestibular function tests.
Results:
The two groups did not differ significantly in terms of clinical manifestation. The abnormal percentage of caloric test in the meningioma group was 36%, compared to 91% in the schwannoma group, and thus both groups differed significantly. However, such difference was not observed between the two groups regardless of mean hearing level, oVEMP test and cVEMP test.
Conclusion:
Combined caloric with oVEMP test results may help differentiate a CPA tumor. Correlation between the caloric and oVEMP test results in a CPA tumor indicates a schwannoma nature, while dissociation between the caloric and oVEMP test results depicts a meningioma character.