CASE HISTORY/CLINIC:
A 75-year-old patient without any recollection of an accident. Rapidly increasing dementia and hemisyndrome on the right.


FINDINGS:
Noncontrast CCT shows a hypodense (20-40HE) sickel-shaped mass lesion between calvaria and brain surface on the left. Prominently enlarged inner and outer liquor spaces outlying the sickel-shaped mass lesion.

DIAGNOSIS:
Chronic subdural hematoma on the left
Side finding: cerebral atrophy.

DIFFERENTIAL DIAGNOSIS:
Hygroma
Subdural empyema

web resources:

1) ACR Learning file
2) MRI-Library