Presentation
Meningism.
Patient Data
Age: Adult
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Faintly seen is an extra-axial collection medial to the left frontal lobe. Frontal sinuses are opacified.
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MRI demonstrate bilateral thin but widespread peripherally enhancing subdural collections associated wtih florid leptomeningeal enhancement. The frontal sinuses are opacified, and represent the likely source of infection.
Case Discussion
Subdural empyema is an uncommon form of intracranial infection in the industrialised world where meningism is usually promptly treated.