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Clinical features of intracranial vestibular schwannomas

  • Authors:
    • Xiang Huang
    • Jian Xu
    • Ming Xu
    • Liang‑Fu Zhou
    • Rong Zhang
    • Liqin Lang
    • Qiwu Xu
    • Ping Zhong
    • Mingyu Chen
    • Ying Wang
    • Zhenyu Zhang

  • View Affiliations

  • Published online on: October 31, 2012     https://doi.org/10.3892/ol.2012.1011
  • Pages: 57-62
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Abstract

The aim of the present study was to discuss the clinical features of intracranial vestibular schwannomas and to evaluate the symptoms and signs as well as their correlation with tumor extension. The records of 1,009 patients who were treated in Shanghai Huashan Hospital were reviewed retrospectively. According to the Samii classification of 1997, the patients were grouped into a T3 and a T4 group based on the radiological findings. We focused our analysis on the incidence of subjective disturbances versus objective morbidity, and symptomatology versus tumor size and extension. Of the 1,009 cases, 424 patients (42.0%) were defined as T3 while 585 patients (58%) were defined as T4. The most frequent clinical symptoms were hearing loss (85.8%), facial numbness (48.9%), ataxia (44.6%), tinnitus (40.1%), deafness (26.3%) and facial paralysis (21.1%). The ratios of gender, vertigo and facial paralysis were significantly different between the T3 and T4 groups (P<0.05); however, none of the clinical symptoms had a positive likelihood ratio (PLR) greater than 10 for T4 prediction. The most frequent cranial nerve disturbance was associated with the cochlear nerve (92.6%) and trigeminal nerve (53.5%). Disturbance of the facial nerve was more severe in T3 than T4 patients (P<0.05). Hearing deficit, facial paresthesia, ataxia and tinnitus are key symptoms of huge vestibular schwannomas. Cochlear, trigeminal and facial nerves were the most commonly affected cranial nerves in cases of large tumors. Gender and tumor size were associated with tumor extension. Although the predictive value was limited, the symptoms of vertigo, facial paralysis and hearing loss may be indicators of tumor growth.
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January 2013
Volume 5 Issue 1

Print ISSN: 1792-1074
Online ISSN:1792-1082

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Spandidos Publications style
Huang X, Xu J, Xu M, Zhou LF, Zhang R, Lang L, Xu Q, Zhong P, Chen M, Wang Y, Wang Y, et al: Clinical features of intracranial vestibular schwannomas. Oncol Lett 5: 57-62, 2013.
APA
Huang, X., Xu, J., Xu, M., Zhou, L., Zhang, R., Lang, L. ... Zhang, Z. (2013). Clinical features of intracranial vestibular schwannomas. Oncology Letters, 5, 57-62. https://doi.org/10.3892/ol.2012.1011
MLA
Huang, X., Xu, J., Xu, M., Zhou, L., Zhang, R., Lang, L., Xu, Q., Zhong, P., Chen, M., Wang, Y., Zhang, Z."Clinical features of intracranial vestibular schwannomas". Oncology Letters 5.1 (2013): 57-62.
Chicago
Huang, X., Xu, J., Xu, M., Zhou, L., Zhang, R., Lang, L., Xu, Q., Zhong, P., Chen, M., Wang, Y., Zhang, Z."Clinical features of intracranial vestibular schwannomas". Oncology Letters 5, no. 1 (2013): 57-62. https://doi.org/10.3892/ol.2012.1011