Contralateral metastatic cerebellopontine angle glioblastoma: A rare manifestation

Mohammad Hamza Bajwa, Mohammad Yousuf Ul Islam, Syed Sarmad Bukhari, Ahsan Ali Khan, Zubair Ahmad, Syed Ather Enam

Research output: Contribution to journalArticlepeer-review


Background: Glioblastoma is the most common glioma presenting within adults with an incidence of 10 per 100,000 people globally. These are mostly supratentorial tumors with rare cases of extra-axial spread. Even rarer is the presentation of glioblastoma within the cerebellopontine angle (CPA). Here, we present a case of a previously resected and irradiated glioblastoma metastasizing from the right temporal lobe region to the contralateral CPA. Case Description: A 24-year-old female who previously underwent surgery and concurrent chemoradiotherapy for a right temporal glioblastoma in August 2020, presented to us 6 months later with headaches, vomiting, and dizziness for the past 6 days. She had left-sided dysmetria on examination. MRI of the brain showed an extra-axial, heterogeneously enhancing lesion within the left CPA. The patient subsequently underwent a left retrosigmoid craniotomy and maximum safe resection of the lesion. Histopathology reported the lesion as a glioblastoma. Conclusion: Glioblastoma within the CPA is rarely reported within the literature. To date, our case is the first instance of an extra-axial contralateral metastasis of glioblastoma.

Original languageEnglish
Article number586
JournalSurgical Neurology International
Publication statusPublished - 2021


  • Cerebellopontine angle
  • Extra axial
  • Glioblastoma
  • Infratentorial
  • Metastasis


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