title: Cranial epidural empyema with osteomyelitis caused by actinomyces, CT, and MRI appearance.
abstract: Actinomycosis is an uncommon cause of intracranial infection. Epidural empyema represents about 6% of CNS actinomycotic lesions. A case of an epidural empyema with parietal bone osteomyelitis caused by Actinomyces israelii is presented. Relevant neuroimaging features were bone erosions and a multiloculated collection with annular contrast enhancing on CT. Postoperative MRI revealed extensive involvement of the neighbor dura, falx, and subdural space. MRI was crucial to follow-up the response to antibiotic treatment.
authors.affiliation: Department of Infectious Diseases, Instituto Nacional de Neurología y Neurocirugía, Mexico, D.F., Mexico.
authors.forename: J L
authors.initials: JL
authors.lastname: Soto-Hernández
authors.forename: V A
authors.initials: VA
authors.lastname: Morales
authors.forename: J C
authors.initials: JC
authors.lastname: Lara Giron
authors.forename: J
authors.initials: J
authors.lastname: Balderrama Bañares
mesh_terms: D000196:Actinomycosis / Q000000981:diagnostic imaging / Q000473:pathology; D000328:Adult; D013354:Empyema, Subdural / Q000000981:diagnostic imaging / Q000382:microbiology* / Q000473:pathology; D006801:Humans; D008279:Magnetic Resonance Imaging; D008297:Male; D010019:Osteomyelitis / Q000000981:diagnostic imaging / Q000382:microbiology* / Q000473:pathology; D010294:Parietal Bone / Q000473:pathology; D014057:Tomography, X-Ray Computed