<prompt> Features of Alzheimers disease are all except?Narrowing of ventriclesHirano bodiesamyloidneuritic plaques  <response>: Ans. a Narrowing of ventriclesRef: Anderson 10th ed.2740, Ref: Robbins 9thpg 1287-88; 8thpg 1313Compensatory ventricular enlargement due to extensive cortical atrophy is called hydrocephalus ex vacuo.This is seen in Alzheimers and picks disease.The pathologic hallmark Q are plaques both neuritic and senile and tangles_ Option d is trueVascular amyloid in cerebral amyloid angiopathy is Ab40-Option c is trueHirano bodies Q and Granulovacuolar degeneration Q are other features seen in AD.-Option b is true 