Brain tumor or infectious disease?

. Occasionally, clinical presentation may be subtle, chronic and more like a brain tumor, making correct diag-nosis difficult and misleading.A few cases have been reported in which brain tumors mimic herpetic encephalitis at onset, however very lit-tle information has been published on the opposite sit-uation, namely herpetic encephalitis masquerading as a CNS neoplasm.Although it is important to bear this possibility in mind in patients suffering from an expansive temporal mass and presenting an atypical clinical course, infectious encepha-litis is not often considered as a potential diagnosis in pa-tients with typical signs and symptoms of a brain tumor.This case is therefore interesting as it represents an unusual form of herpetic encephalitis (HE). CaSe