Diagnostic challenges in epithelioid glioblastoma of the cerebellum: A case report

Abstract

Epithelioid glioblastoma (eGB) is an uncommon morphological variant of isocitrate dehydrogenase wild-type GB that commonly presents as a cerebral mass in young adults and children. Here, we report the case of a 22-year-old man who presented with a cerebellar tumor. With the provisional diagnosis of pilocytic astrocytoma and adult medulloblastoma, he underwent suboccipital craniotomy with gross total excision of the tumor. On histopathological examination, he was diagnosed with eGB. Cerebellar presentation of eGB is a rare event that has not been previously described in the literature. The present case also highlights the need for differentiating eGB from its morphological mimics by carefully interpreting histopathological and immunohistochemical examination findings.

Keywords

• adult medulloblastoma
• case report
• cerebellar tumor
• epithelioid cells
• isocitrate dehydrogenase wild-type glioblastoma
• pilocytic astrocytoma