Teflon granuloma with midbrain cysts after microvascular decompression of the trigeminal nerve.

Granuloma formation is a known complication after microvascular decompression using Teflon fibers. Such granulomas commonly present with recurrent neuralgia whereas other symptoms are exceedingly rare. We report the first case of a multicystic lesion due to a Teflon granuloma that is also uncommon for the lack of recurrent neuralgia.