Akdeniz Vertigo Merkezi

Acoustic Neuroma (Vestibular Schwannoma)

Acoustic neurinoma (vestibular schwannoma) is a usually benign tumor that affects the hearing and balance nerves.

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What is an Acoustic Neuroma?

An acoustic neuroma is a slow-growing, typically benign tumor that develops from the Schwann cells surrounding the hearing and balance nerves (vestibulocochlear nerve). It is generally non-cancerous and does not metastasize.

Symptoms of Acoustic Neuroma

  • Unilateral hearing loss: Progressive, often affecting high frequencies first.
  • Tinnitus (ringing in the ear): Usually in one ear.
  • Dizziness or balance problems: Caused by involvement of the vestibular system.
  • Facial numbness or weakness: Due to compression of the facial nerve by the tumor.
  • Headaches and coordination issues: May occur with larger tumors.

Causes of Acoustic Neuroma

  • Genetic factors: While most cases are sporadic, neurofibromatosis type 2 (NF2), a genetic disorder, is a known risk factor.
  • Spontaneous mutations: The majority of acoustic neuroma cases are random and not linked to hereditary factors.

How is Acoustic Neuroma Diagnosed?

  • Hearing tests (audiogram): To determine the degree and type of hearing loss.
  • Magnetic resonance imaging (MRI): The most sensitive diagnostic method.
  • Computed tomography (CT): Used to evaluate bone structures.
  • Electronystagmography (ENG) or videonystagmography (VNG): To assess balance system function.

Can Acoustic Neuroma Be Treated?

Yes, treatment options depend on the tumor’s size, growth rate, and severity of symptoms:

  1. Observation: Regular MRI monitoring for small, asymptomatic tumors.
  2. Surgery: Removal of the tumor, with risks including hearing loss and facial nerve damage.
  3. Radiosurgery (Gamma Knife): A minimally invasive method to stop the growth of small or medium-sized tumors.

Growth Rate of Acoustic Neuroma

Acoustic neuromas generally grow slowly, but growth can sometimes accelerate. Regular follow-ups are essential to monitor the tumor’s progression.

What Happens if Acoustic Neuroma Is Untreated?

If left untreated, an acoustic neuroma can grow and cause:

  • Progression of hearing loss
  • Facial nerve compression leading to facial paralysis
  • Compression of the brainstem, potentially causing severe neurological complications (rarely life-threatening)

Complications of Acoustic Neuroma

  • Hearing loss
  • Facial paralysis or asymmetry
  • Balance problems
  • Increased intracranial pressure (hydrocephalus) in large tumors

Who Is at Higher Risk for Acoustic Neuroma?

  • Individuals aged 30–60 years
  • People with neurofibromatosis type 2
  • Those with a family history of acoustic neuroma

Can Acoustic Neuroma Be Prevented?

There are no specific prevention methods for acoustic neuroma, but regular medical check-ups, especially for high-risk individuals, are important for early detection.

Impact of Acoustic Neuroma on Quality of Life

  • Hearing loss, tinnitus, and balance problems can significantly affect daily life.
  • Rehabilitation and supportive therapies after surgery or radiosurgery can enhance quality of life.

Recovery After Treatment

  • Post-surgery: Recovery of facial nerve function and balance may take weeks to months.
  • Post-radiosurgery: The tumor usually does not shrink but its growth stops, and symptoms may improve.
  • Rehabilitation: Balance exercises and physical therapy support recovery.

Acoustic neuroma can be effectively managed with early diagnosis and appropriate treatment. If you experience symptoms or believe you are at risk, consult an ENT specialist or neurologist for evaluation.

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