However, it's rare for them to reach this stage. Many grow very slowly or not at all, and those that grow more quickly can be treated before they become too big.
Even with treatment, symptoms such as hearing loss and tinnitus can persist and affect your ability to work, communicate and/or drive. These problems may need additional treatment – read more about treating tinnitus.
An acoustic neuroma can occasionally return after treatment. This is thought to happen to around 1 in every 20 people who have had surgical removal.
You will probably continue having regular MRI scans after any treatment, to check if the tumour is growing again or coming back.
Information about you
If you have an acoustic neuroma, your clinical team will pass information about you on to the National Congenital Anomaly and Rare Diseases Registration Service (NCARDRS).
This helps scientists look for better ways to prevent and treat this condition. You can opt out of the register at any time.