empyema subdural empyema https://www.malacards.org/card/subdural_empyema UMLS:C0038539 MONDO:0006984 SCTID:37660004 MedDRA:10042360 GARD:0024511 An intracranial or rarely intraspinal suppurative process invading the space between the inner surface of the dura mater and the outer surface of the arachnoid. MESH:D013354 EFO:1001196 DOID:11389 MEDGEN:52531 central nervous system infectious disorder