A 38 year-old man presented fever and a clinical picture of intracranial hypertension and ataxic syndrome. A CT-scan disclosed an expanding lesion of the cerebellum. Surgical excision of the lesion was performed and pathological examination made the diagnosis of an actinomycotic abscess. The probable primary source of infection were the lungs and/or oral cavity. The postoperative course was uneventful, with complete recovery after a long period of treatment with penicillin (IV and PO). The authors review some aspects about central nervous system involvement in actinomycosis.
actinomycosis; cerebellar abscess; penicillin