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Acoustic neuroma

January 2nd, 2021

Acoustic neuroma (vestibular schwannoma) is a benign tumor that develops on the vestibular and/or cochlear nerves leading from inner ear to the brain. The pressure on the nerve from the tumor may cause hearing loss and imbalance.

May show erosion and widening of the internal acoustic canal. The density of these tumours on non-contrast imaging is variable, and often they are hard to see, Contrast enhancement is present but can be underwhelming, especially in larger lesions with cystic components. Cystic low attenuation, lobulated mass with enhanced septa, occupying the region of the left cerebellopontine angle, which extends into the left internal acoustic meatus.