Schwannoma
What is a schwannoma?
Schwannomas are a benign peripheral tumor that form from the Schwann cells. Schwann cells are cells in the peripheral nervous system that produce the protective lining (sheath) of a nerve.
What causes a schwannoma?
Schwannomas are caused by a DNA mutation which causes Schwann cells to rapidly multiply.
Who is at risk for a schwannoma?
- Personal or family history of neurofibromatosis-2 (NF-2)
- Exposure to radiation
What are the symptoms of a schwannoma?
Depending on the nerve that the tumor is within, there is often pain in the affected area, weakness, and at times a palpable mass under the skin.
How is a schwannoma diagnosed?
- Patient history
- Physical exam
- Imaging: ultrasound, MRI
- Biopsy: a biopsy is the only definitive way to diagnose a tumor
How is a schwannoma treated?
Nonsurgical
Monitor with imaging
Surgical
If the tumor is causing symptoms, it can often be surgically removed.