This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: None, Subject name: Pathology
[{'content': 'All of the following are pathologic features of brain in AIDS, EXCEPT: \nSelect and explain. \nA. Perivascular giant cell invasion, B. Microglial nodules, C. Vasculitis, D. Temporal lobe infarction', 'role': 'user'}, {'content': 'Answer: C \nExplanation: Pathologic features of brain in AIDS includes: Gross: Encephalitis: frontal /temporal coical atrophy Histology: Meningitis with mild lymphocytic infiltrates and scanty perivascular inflammation Features of giant cell (HIV) encephalitis are: Presence of microglial nodules Pericapillary aggregates of multinucleated giant cells having generous or scanty neoplasm Perivascular lymphocytic cuffing In leukoencephalopathy: there is diffuse diffuse demyelination and infiltration of macrophages and multinucleated giant cells. Ref: Neuropathology,A Volume in the High Yield Pathology Series (Expe Consult ... edited by Anthony T. Yachnis page 235.', 'role': 'assistant'}]