Peripheral nerve tumors are growths of tissue that occur on or near the strands of tissue (nerves) that transmit electrical signals from your brain to the rest of your body. Peripheral nerves link the brain and spinal cord to other parts of your body.
Peripheral nerve tumors can occur anywhere in the body. They can be noncancerous (benign) or cancerous (malignant).
Peripheral nerve tumor signs and symptoms depend on where the tumor occurs, but may include swelling or a lump under your skin where the tumor forms. Peripheral nerve tumors can cause pain or a loss of function in the affected area.
Peripheral nerve tumors care at Mayo Clinic