title: Dorsal midbrain encephalitis caused by Propionibacterium acnes. Report of two cases.
abstract: A syndrome of dorsal midbrain dysfunction in association with a central nervous system anaerobic diphtheroid infection is described. Two cases of infection with Propionibacterium acnes manifested as shunt malfunctions with a clinical dorsal midbrain syndrome. Magnetic resonance images showed increased signal in the midbrain tectum which has decreased slowly over time. The evidence suggesting that this syndrome represents bacterial midbrain encephalitis is discussed.
authors.affiliation: Department of Neurosurgery, University of Minnesota, Minneapolis.
authors.forename: P J
authors.initials: PJ
authors.lastname: Camarata
authors.forename: R E
authors.initials: RE
authors.lastname: McGeachie
authors.forename: S J
authors.initials: SJ
authors.lastname: Haines
mesh_terms: D000293:Adolescent; D000328:Adult; D000900:Anti-Bacterial Agents / Q000627:therapeutic use; D001424:Bacterial Infections / Q000188:drug therapy; D002557:Cerebrospinal Fluid Shunts; D004660:Encephalitis / Q000175:diagnosis / Q000000981:diagnostic imaging / Q000209:etiology*; D004868:Equipment Failure; D006801:Humans; D006849:Hydrocephalus / Q000601:surgery; D008279:Magnetic Resonance Imaging; D008297:Male; D008636:Mesencephalon; D011425:Propionibacterium acnes; D014057:Tomography, X-Ray Computed
chemical_list: D000900:Anti-Bacterial Agents