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A 75 year-old man developed progressive confusion, drowsiness and weakness of the left arm and leg.
Axial CT scans. Note the crescent shape overlying and compressing the right hemisphere. On CT, the findings may be subtle - acute blood is bright; chronic blood is dark; but subacute blood may be isointense, as in this case. However, looking closely, note how all the sulci are effaced on the right but normal on the left. Looking closely, one can see the tell tale crescent shape of the subdural hematoma.
The Electronic Curriculum is copyrighted 1998, Case Western Reserve University School of Medicine.