Table of Contents

Washington University Experience | INFECTION | Bacteria | Empyema, Subdural | 1B2 Empyema Subdural & Meningitis (Case 1) 5

1B2,3 There is an unusual appearance to the gross specimen. In the most superior part of the specimen there is opacification of the leptomeninges by a subarachnoid infiltrate with preservation and visibility of the cortical vasculature as expected in infection/organization of the subarachnoid space (arrowheads, 1B3). Additionally, there is superimposition of purulent material (arrow, 1B3) external to the arachnoid pia corresponding to the subdural empyema.

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