This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Systemic Pathology, Subject name: Pathology
[{'content': 'All of the following are true statements about glioblastoma, except: \nSelect and explain. \nA. WHO grade IV tumour, B. Perineuronal satellitosis, C. Pseudo-palisading necrosis, D. Microvascular proliferation', 'role': 'user'}, {'content': 'Answer: B \nExplanation: Glioblastoma: Infiltrating astrocytoma and glioblastoma (the synonym for "grade IV astrocytoma") account for about 80% of primary brain tumors in adults. WHO grade IV astrocytic tumour On microscopy, necrosis (pseudo-pallisading) and/or microvascular proliferation are present Oligodendroglioma Fried egg appearance (perinuclear halo) Chicken wire capillaries (high degree of vascularization) Perineuronal satellitosis (Tumor cells that infiltrate the cerebral coex often collect around neurons) M/c mutation - IDH2 mutation', 'role': 'assistant'}]