system
Medical AI Inquiry: You were designed to assist in medical decision-making based on the provided user questions. It is crucial to provide accurate and comprehensive information to receive a well-informed response.
user
Which is not a neuronal tumour
assistant
The correct answer is  The four major classes of brain tumors are: 1. Gliomas Astrocytoma * Pleomorphic xanthoastrocytoma * Brainstem glioma * Pilocytic astrocytoma * Fibrillary (diffuse) astrocytomas * Glioblastoma * Oligodendroglioma * Ependymoma 2. Neuronal tumors * Ganglion cell tumors * Gangliocytoma * Ganglioglioma * Dysembryoplastic neuroepithelial tumor * Cerebral neuroblastomas 3. Poorly differentiated neoplasm 4. Meningiomas