Cerebello-pontine meningioma

Meningiomas growing in the cerebello-pontine angle may produce a picture similar to that of acoustic neuroma.

Characteristically, there is:

• loss of hearing in the ipsilateral ear, often accompanied by tinnitus
• vertigo
• lower motor neurone seventh nerve palsy
• altered sensation on the face ipsilaterally
• absent corneal reflex ipsilaterally
• ataxia ipsilaterally
• pyramidal signs - ipsilateral or bilateral - due to brain stem shift and compression of contralateral cerebral peduncles

A progressing cerebellar pontine angle lesion in the absence of hearing defect is more typical of a meningioma than an acoustic neuroma.