[Polyradiculopathy and ataxia: clinical manifestation of late recurrence of pilocytic astrocytoma with cerebral and spinal dissemination].

A 14-year-old girl underwent surgery for cerebral pilocytic astrocytoma. Eighteen years later she developed acute ataxia and a polyneuropathic syndrome. A recurrence with cerebral and spinal leptomeningeal dissemination of the tumor was discovered. Treatment of these cases is always difficult, and no standard therapy scheme has been established so far.