This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Central Nervous System, Subject name: Pathology
Binswanger disease is a form of? 
Select and explain. 
A. Hypertensive retinopathy, B. Hypertensive nephropathy, C. Hypertensive encephalopathy, D. subcortical leukoencephalopathy
D: subcortical leukoencephalopathy
Answer: D: subcortical leukoencephalopathy 
Explanation: Ans. (d) Subcortical leukoencephalopathy(Ref: International Neurology textbook pg 12)Binswanger's disease (also known as subcortical leukoencephalopathy), also called subcortical vascular dementia, is a type of dementia caused by widespread, microscopic areas of damage to the deep layers of white matter in the brain Hypertension and old age are risk factors.