Nerve Tumors
Growths that arise from or press on peripheral nerves, such as schwannomas and neurofibromas, can cause a lump, pain, numbness, weakness, or progressive nerve symptoms and require careful evaluation to protect nerve function.
Peripheral nerve pathway
From injury assessment to reconstruction
Diagnosis
Define the injured nerve, severity, timing, and pattern of weakness or pain.
Timing
Determine whether observation, urgent repair, or reconstruction is most appropriate.
Reconstruction plan
Choose repair, grafting, decompression, tumor surgery, or nerve transfer.
Recovery
Track regeneration, therapy progress, pain control, and functional return.
Time-sensitive repair
Early specialist review can preserve options for nerve repair, grafting, or transfer.
Anatomic diagnosis
Exam, imaging, EMG, and surgical history help define the level and severity of injury.
Function-first planning
Treatment is chosen around realistic goals for movement, sensation, pain, and independence.
Overview
Nerve tumors are growths that develop from the cells of a peripheral nerve or its sheath. Most are benign, such as schwannomas and neurofibromas, but they can cause pain, a palpable lump, numbness, weakness, or progressive nerve symptoms as they enlarge or press on surrounding tissue. Some occur in the setting of genetic tumor syndromes. A small number are malignant and require prompt, coordinated care.
Careful diagnosis is essential: the goal is to treat the tumor while protecting the function of the nerve it involves.
Types of nerve tumors
- Schwannoma: Often grows from the nerve sheath and may push nerve fibers aside. Many are benign and can be removed with careful microsurgical technique when treatment is needed.
- Neurofibroma: Often grows within the nerve and may be more intertwined with nerve fibers. Surgical planning depends on symptoms, growth, location, and the risk to function.
- Plexiform or multifocal tumors: May occur in genetic tumor syndromes and often require individualized surveillance and multidisciplinary care.
- Malignant peripheral nerve sheath tumor: Rare, but important to recognize when a tumor grows quickly, becomes increasingly painful, or has concerning imaging features.
- NF2-related tumors: NF2-related schwannomatosis can involve vestibular schwannomas, other cranial nerve tumors, spinal tumors, meningiomas, and peripheral nerve tumors.
Symptoms
- A firm lump along the course of a nerve
- Pain, tingling, or “electric” sensations when the lump is touched
- Numbness or weakness in the area the nerve supplies
- Symptoms that slowly progress as the tumor grows
- Hearing loss, tinnitus, imbalance, facial symptoms, swallowing symptoms, or hoarseness when cranial nerves are involved
- Multiple tumors or tumors at a young age, which may raise the question of a genetic condition
Diagnosis & evaluation
Evaluation starts with the symptom pattern, neurologic exam, and review of prior imaging. MRI is often the main study used to understand the tumor’s location, size, growth pattern, and relationship to the nerve. EMG and nerve conduction studies may help when weakness, numbness, or another nerve diagnosis needs clarification.
For patients with multiple tumors, young age at presentation, bilateral vestibular schwannomas, meningiomas, spinal tumors, or family history, genetic evaluation may be appropriate. The purpose is not only to name the condition, but also to plan surveillance for the brain, spine, hearing, vision, and other nerves when needed.
Treatments Offered
- Microsurgical resection of benign nerve tumors
- Function-preserving removal with intraoperative nerve monitoring
- Biopsy and multidisciplinary management of complex or malignant tumors
- Surveillance for selected tumors where observation is appropriate
- Coordination with genetics, oncology, radiation oncology, otology, neuro-ophthalmology, or rehabilitation when needed
Dr. Barone’s approach
Dr. Barone evaluates nerve tumors with clinical examination and dedicated imaging to characterize the growth and its relationship to the nerve. As a peripheral nerve surgeon, his priority is maximal safe treatment with preservation of nerve function, using microsurgical technique and intraoperative monitoring where appropriate.
When a tumor is stable and low-risk, observation may be safer than surgery. When surgery is recommended, the plan is built around the involved nerve, expected function, tumor biology, and the patient’s goals. He coordinates with oncology, genetics, hearing and balance specialists, and rehabilitation teams when needed.
What to Expect
At your consultation, Dr. Barone reviews your imaging and examination to determine whether the tumor should be removed, biopsied, or monitored. If surgery is recommended, he explains how the operation is planned to protect nerve function, the expected recovery, and any follow-up. Many patients with benign nerve tumors do well after treatment, but the expected outcome depends on the tumor type, location, preoperative nerve function, and whether the tumor is part of a broader genetic condition.
Frequently asked questions
Are peripheral nerve tumors cancer? +
Most peripheral nerve sheath tumors, including many schwannomas and neurofibromas, are benign. A small number can be malignant or behave aggressively, so imaging, growth pattern, symptoms, and sometimes biopsy guide the plan.
What symptoms can a nerve tumor cause? +
Symptoms may include a growing lump, pain, electric shocks when the area is touched, numbness, tingling, weakness, balance or hearing symptoms for certain cranial nerve tumors, or progressive loss of function.
What is NF2? +
NF2-related schwannomatosis is a genetic condition associated with tumors such as vestibular schwannomas, other schwannomas, meningiomas, and spinal or peripheral nerve tumors. Care usually requires coordinated surveillance and specialty input.
Does every nerve tumor need surgery? +
No. Some tumors are observed with repeat imaging when they are small, stable, and not causing important symptoms. Surgery is considered when growth, pain, neurologic deficit, diagnostic uncertainty, or malignant concern changes the risk-benefit balance.
Considering treatment for Peripheral nerve tumor?
Dr. Barone evaluates new patients and referrals at Houston Methodist Hospital, Houston. Patients from outside Houston, across the United States, and internationally are welcome.