Acoustic neuroma – a relatively common type…

Acoustic neuroma – a relatively common type of schwannoma arising from the vestibulocochlear nerve (CN VIII). It typically presents with sensorineural hearing loss or tinnitus and accounts for 75 – 90% of cerebellopontine angle masses. Extension into the internal acoustic canal is a major differentiating feature and results in a trumpeted appearance of the canal and a classic ice-cream cone appearance with the portion outside the canal representing the ice-cream. When seen bilaterally, acoustic neuromas are strongly suggestive of neurofibromatosis type 2.   

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