Aseptic meningitis after posterior fossa surgery treated by pseudomeningocele closure

Aseptic meningitis is a recognised complication after posterior fossa surge ry. It is often self limiting but occasionally runs a protracted course req uiring repeated CSF examination to exclude infection, and treatment with sy stemic steroids. A patient is described with aseptic meningitis after poste rior fossa surgery who underwent posterior fossa re-exploration nearly 3 ye ars after the initial operation. This disclosed a pseudomeningocele, which was closed. The patient remains symptom free almost 2 years after closure. In this case of chronic aseptic meningitis after posterior fossa surgery, c losure of the pseudomeningocele found at exploratory surgery led to resolut ion of the symptoms.