In Hydrocephalus exvacuo, the compensatory enlargement of ventricles and increase in CSF volume due to brain atrophy is seen in-

Ans. is 'c' i.e., Both Hydrocephalus ex vacuo In significant coical atrophy, there is compensatory ventricular enlargement secondary to loss of parenchyma --> Hydrocephalus ex vacuo. o This can be seen in Alzheimer disease and Pick disease. -