Computed tomographic scanning in Listeria monocytogenes meningitis.

Seven adults with Listeria monocytogenes infection of the central nervous system had computed X-ray tomography of the head performed. One patient had a normal scan, three had hydrocephalus; cerebral edema, an arachnoid cyst and hyperemia were each noted in one patient. Atrophy of the vermis of the cerebellum was demonstrated on follow-up scans in two patients. Further studies are necessary to determine whether such atrophy is a frequent sequelae of L. monocytogenes central nervous system infection.