Abstract
A case of anaerobic streptococcus brain abscess was reported in which the cerebral lesion appeared on CT as a ring-enhanced mass, and gas bubbles were seen following corticosteroid administration without antibiotics. Surgery revealed no encapsulation. Surgical drainage of the cavity and treatment with antibiotics and corticosteroid were ineffective. Excision of the abscess and treatment with chloramphenical and glycerol were successful.
