Multiple cerebral abscesses because of Listeria monocytogenes: three case reports and a literature review of supratentorial listerial brain abscess(es).

Background: Central nervous system involvement often follows bacteremia because of Listeria monocytogenes. Meningitis is clinically the most common manifestation, while brain abscess occurs in about 1% of patients. Brain abscess is usually solitary but in recent years, probably in part because of the availability of computerized tomography and magnetic resonance imaging, several reports have described two or more separate supratentorial abscesses.