Glioblastoma mimicking autoimmune meningitis in an adult: A complex diagnostic challenge

GBM can rarely present with noticeable symptoms and radiological features resembling autoimmune meningitis, posing diagnostic challenges. GBM cases involving spinal dissemination typically have a poorer prognosis, emphasizing the necessity of thorough diagnostic strategies. These should encompass histopathological biopsy and advanced imaging for optimal management, as delayed intervention significantly impacts survival. This report highlights the importance of maintaining a high level of suspicion for GBM and prompt intervention, including biopsy, in the presence of atypical clinical, radiological, and laboratory signs suggestive of meningitis.