in the setting of progressive sensorineural hearing loss , atypical meniere disease , or recurrent vertigo , the presence of a mass in the labyrinth or labyrinthine windows- delineated on ct or mr images , despite a normal internal auditory canal , cerebellopontine angle , or brain stem - is highly suggestive of intralabyrinthine schwannoma .
C0022889
labyrinthine
C0222711
internal auditory canal