Benign nerve sheath tumors come in two forms, schwannomas and neurofibromas. They are very similar and treatment considerations for both are virtually identical.
While some extremely rare nerve sheath tumors are aggressive, or malignant(cancerous), the vast majority of them are benign (noncancerous). This means they grow very slowly and don’t always pose an immediate threat to your health.
Even so, they can cause symptoms that many patients find upsetting and, if left untreated, lead to serious neurological symptoms such numbness, weakness, and loss of balance. Typical symptoms include pain, numbness and/or loss of function in the affected area.