title: Focal encephalitis simulating neoplasm.
mesh_terms: D000208:Acute Disease; D000328:Adult; D001932:Brain Neoplasms / Q000000981:diagnostic imaging*; D002533:Cerebral Angiography; D003937:Diagnosis, Differential; D004660:Encephalitis / Q000000981:diagnostic imaging* / Q000601:surgery; D006561:Herpes Simplex / Q000000981:diagnostic imaging; D006801:Humans; D008297:Male; D018139:Simplexvirus / Q000302:isolation & purification