Is an acoustic neuroma cancer?

No. An acoustic neuroma, medically known as a vestibular schwannoma, is generally a benign tumor rather than cancer. It usually develops from Schwann cells that surround the nerves responsible for hearing and balance, and it commonly grows slowly. However, being benign does not mean that it is always harmless; if the tumor becomes larger, it can press on nearby nerves or brain structures, and large tumors can become serious. [1] [2]

What is an acoustic neuroma?

An acoustic neuroma is a tumor that develops on the nerve carrying hearing and balance signals between the inner ear and the brain. It is also called a vestibular schwannoma or acoustic neurinoma. Most cases occur on one side, while tumors affecting both sides can occur in association with certain inherited disorders such as neurofibromatosis type 2. Most unilateral tumors are not inherited and occur sporadically. [1] [2]

What symptoms can it cause?

Symptoms usually result from the tumor affecting the hearing and balance nerves. Common signs include hearing loss in one ear or asymmetric hearing, ringing in the ear, dizziness, and balance problems. As the tumor grows, it can cause facial numbness or weakness of the facial muscles because nearby nerves can also be affected. These symptoms do not by themselves prove that a person has an acoustic neuroma because they can occur with other common middle- or inner-ear conditions. However, one-sided or asymmetric symptoms warrant appropriate evaluation. [1] [2]

How is it diagnosed, and does it always need treatment?

Evaluation generally includes an ear examination and hearing and balance tests, and magnetic resonance imaging can be important for identifying the tumor and determining its location and size. Not every tumor requires immediate removal. If a tumor is small and is not growing, regular monitoring with imaging may be appropriate in some cases. When treatment is needed, the choice depends on factors such as tumor size, growth, existing hearing, and effects on nearby nerves and structures. The sources describe observation, surgery, and radiation as management options. [1] [2]

Can a benign tumor still be dangerous?

Yes. Although the tumor is not cancer, its size and location can make its effects important. A large tumor can press on the brainstem or cerebellum and can affect nerves responsible for hearing, balance, and facial movement. Therefore, the word “benign” describes the tumor as non-malignant, but it does not mean that leaving it without monitoring is appropriate in every case. Management depends on the complete clinical picture rather than on the tumor label alone. [1] [2] Acoustic Neuroma: Symptoms, Diagnosis and Treatment in Jordan (Arabic)

Medical references

• Vestibular Schwannoma (Acoustic Neuroma) and Neurofibromatosis
• Acoustic neuroma