Schwannoma

A schwannoma tumor is a type of brain tumor that is usually benign. The most common type of schwannoma is known as vestibular schwannoma or acoustic neuroma, and it occurs when the Schwann cells that insulate nerves grow on a nerve that connects your inner ear and brainstem. If you have a diagnosis of a schwannoma tumor, here’s what you need to know and how our team can help guide your treatment.

What is a schwannoma?

Schwannoma is a rare type of tumor that develops in the Schwann cells of your nervous system. These cells create an insulating sheath around your nerves. While these tumors can grow in your arms or legs as well as along your spinal cord, they are most commonly found around the head and neck area. Only about 5% of cases become cancerous (malignant) soft tissue sarcoma. Although they are usually benign and slow growing, they can cause serious problems if left untreated.

Who is affected by schwannoma?

Schwannomas are rare, with less than 200,000 people diagnosed in the U.S. per year, and they generally affect adults between 50-60 years old. Approximately 90% of people with schwannomas only have one tumor; however, it is possible to have more.

Symptoms of schwannoma

Because schwannomas grow slowly, they may be present for months or even years without causing symptoms. Symptoms will vary greatly depending on where the schwannoma tumor is located but could include:

• Visible lump under the skin
• Muscle weakness
• Pins and needles sensation
• Sharp or burning pain

Vestibular schwannoma symptoms may include:

• Hearing loss
• Facial weakness
• Ringing in one ear (tinnitus)
• Facial tingling

If you are experiencing any of these symptoms, see your doctor as soon as possible

Diagnosing a schwannoma

If you experience symptoms that may indicate a schwannoma, a doctor will typically perform a physical exam. You may also undergo imaging tests, such as computerized tomography (CT) scans, magnetic resonance imaging (MRI) studies, or ultrasounds. These tests can help the doctor identify potential tumors and determine their size and location. The results will also help your doctor assess any other neurological problems that may be present. In some cases, a biopsy may be needed to confirm a proper diagnosis.

Causes of schwannoma

The exact cause of schwannoma is unknown, and the underlying cause may be genetic or environmental, but most schwannoma cases occur randomly. Genetic disorders such as schwannomatosis or neurofibromatosis type 2 are associated with schwannomas. Some people are born with a mutation in the NF2 gene, which increases their risk of developing schwannomas.

It is also believed that exposure to radiation, such as undergoing radiation therapy, may be a contributing factor.

Treatment for schwannoma

Treatment for a Schwannoma depends on the size and location of the tumor, as well as its impact on nearby structures. The Intent Medical Group team uses innovative technology and techniques, to provide quality care based on your individual circumstance. You may undergo one or more of these treatment options.