This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Miscellaneous, Subject name: Psychiatry
[{'content': 'Tl-weighted axial gadolinium-enhanced MRI demonstrates an enhancing tumor of the right frontal lobe. The most likely diagnosis is \nSelect and explain. \nA. Oligodendroglioma, B. Ependymoma, C. PCNSL, D. Glioblastoma multiforme', 'role': 'user'}, {'content': 'Answer: D \nExplanation: (D) Glioblastoma multiforme# On MRI, the tumors appear as ring-enhancing masses with central necrosis and surrounding edema.> Glioblastoma multiforme (GBM; malignant glioma) is the highest-grade form of astrocytoma and makes up about two thirds of all brain astrocytomas.> Prognosis for this tumor is at the extreme worst end because of its high-grade status.', 'role': 'assistant'}]