Meningitis is a common
central nervous system (CNS) complication of the
mumps, a
viral infection, but
encephalitis and
meningoencephalitis are less common in
mumps. We describe
magnetic resonance imaging findings of acute
mumps meningoencephalitis in a 32-year-old
male who showed bilateral hippocampal lesions without preceding
parotitis. Although it is rare, hippocampal involvement should be considered a CNS complication of
mumps infection.