• Dian-Xu Yang, Yao Jing, Zhi-Ming Xu, Fang Yuan, Ying-Liang Liu, Gui-Song Wang, and Heng-Li Tian.
• Department of Neurosurgery, Shanghai Jiao Tong University Affiliated Sixth People's Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai, China.
• World Neurosurg. 2019 Feb 1; 122: 48-52.

BackgroundGliomas are usually located in the supratentorial region and are extremely rare at the cerebellopontine angle (CPA). Consequently, gliomas in the CPA are easy to misdiagnose preoperatively.Case DescriptionThis paper presents a 55-year-old man with an extraaxial CPA glioblastoma arising from the proximal portion of cranial nerve (CN) VIII. Preoperative imaging findings suggested an acoustic neuroma. The tumor was removed subtotally, and it was completely separated from the brainstem and cerebellum. The histopathologic examination showed a glioblastoma.ConclusionsTo our knowledge, this case is the second report of a true primary extraaxial CPA glioblastoma. Therefore glioma should be considered in the differential diagnosis of CPA masses with atypical imaging features, although they are extremely rare.Copyright © 2018 Elsevier Inc. All rights reserved.

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