Alzheimer disease (CT only)

Case contributed by A.Prof Frank Gaillard

Presentation

Long standing dementia - nursing home. Now fall.

Patient Data

Age: 84
Gender: Female
CT

 Marked volume loss is seen involving both hippocampi and parahippocampal gyri, especially anteriorly, with relative sparing of the rest of the temporal lobe. 

No intracranial haemorrhage. Periventricular and deep white matter hypodensity in keeping with moderate small vessel ischaemia. No evidence of acute infarction. Ventricles are enlarged but are unchanged in size compared to the previous CT with a maximum biventricular distance of 4.6cm. No calvarial fracture or suspicious bony abnormality seen. Imaged paranasal sinuses and mastoid air cells are clear.

Features are consistent with the clinical impression of Alzheimer disease. 

Case Discussion

The degree of atrophy in advanced dementia can be striking. The preferential involvement of the hippocampi and parahippocampal gyri, with relative sparing of the rest of the temporal lobe is fairly typical of Alzheimer disease

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Case information

rID: 33753
Case created: 22nd Jan 2015
Last edited: 29th Feb 2016
Inclusion in quiz mode: Included

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