What Are Spinal Tumors?
A spinal tumor is an abnormal growth of tissue within or around the spinal canal - the bony tunnel that houses and protects the spinal cord and the nerve roots branching off it. Like brain tumors, spinal tumors may be primary (originating in the spine or spinal cord itself) or secondary/metastatic (spreading to the spine from a cancer elsewhere in the body, such as breast, lung, prostate, or kidney).
Metastatic spinal tumors are by far the most common overall. Primary spinal tumors are far less frequent, but include several important benign types that are highly treatable and often curable with surgery alone. The spine is also home to some tumors that would never be seen inside the brain, making spinal tumor classification its own distinct area of neurosurgery.
The spinal cord has very limited ability to recover from sustained compression. Symptoms that develop gradually over weeks to months can often be fully reversed with timely surgery. Symptoms that have been present for many months - or that develop acutely and are severe - carry a less certain neurological recovery.
The Three Anatomical Zones
The single most important classification of any spinal tumor is where it sits relative to the spinal cord and its surrounding membranes. This determines what type of tumor it is likely to be, what symptoms it causes, and how it is treated.
Outside the dura mater. The most common zone overall - mainly metastatic cancer in the vertebral bones pressing on the cord. Also includes lymphomas and primary bone tumors.
Inside the dural sac but outside the spinal cord itself. The most common primary spinal tumors, including meningiomas, schwannomas, and neurofibromas, live here.
Growing within the substance of the spinal cord. Includes ependymomas and astrocytomas. Requires highly specialised microsurgical technique with intraoperative monitoring.
Common Tumor Types by Zone
Intradural Extramedullary - Benign & Highly Treatable
Arises from the meninges. Over 80% occur in the thoracic region. More common in middle-aged women. Usually benign and completely curable with surgical removal.
Grows from the nerve root sheath. Often causes radiating pain before cord compression. Frequently dumbbell-shaped. Benign and curable with surgery.
Arises from the filum terminale at the lower end of the spinal canal. Slow-growing, usually benign, and treated with surgical removal.
Congenital lesions arising from skin elements trapped during embryonic development. Benign but can slowly compress the cord.
Intramedullary - Inside the Cord
Arises from ependymal cells lining the central canal. Often well-demarcated, allowing complete surgical removal with an excellent chance of cure and neurological preservation.
Often infiltrative, blending into normal cord tissue without a clear boundary. Grade determines prognosis. Low-grade tumors can do well with surgery and radiation.
A benign, highly vascular tumor that may be sporadic or associated with VHL syndrome. Often associated with a surrounding cyst and surgically curable when completely removed.
Extradural - Metastatic & Bone Tumors
Metastatic tumors from breast, lung, prostate, kidney, thyroid, and other cancers are by far the most common tumors in this zone. They infiltrate the vertebral body and may collapse it, causing instability and cord compression. Primary bone tumors of the spine - such as chordoma, osteosarcoma, and giant cell tumor - are rare but important.
Symptoms: Recognising a Spinal Tumor
Spinal tumor symptoms depend on the level of the spine affected, whether the cord or nerve roots are compressed, and how rapidly the tumor grows. Symptoms may be subtle and progress over months before a diagnosis is made.
Persistent ache that is worse at night or at rest, unlike mechanical back pain which eases with rest.
Pain, burning, or electric sensations radiating down the arm or leg, following the path of a compressed nerve root.
Gradually worsening weakness in the arms or legs, sometimes beginning as clumsiness or difficulty climbing stairs.
Numbness, tingling, or a band-like tightness around the chest or abdomen, a characteristic clue to thoracic cord involvement.
Difficulty initiating urination, urgency, incontinence, constipation, or loss of bowel control requiring urgent evaluation.
Unsteadiness, stiffness of the legs, or a spastic walking pattern from cord compression above the lumbar spine.
Progressive weakness in both legs, new bladder or bowel dysfunction, or rapidly worsening neurological symptoms demand same-day MRI imaging. Spinal cord compression is a neurosurgical emergency.
Symptoms by Spinal Level
| Level | Common Symptoms | Key Structures at Risk |
|---|---|---|
| Cervical (Neck) | Neck pain, arm weakness/numbness, weakness in all four limbs, breathing difficulty with high cervical tumors | Spinal cord, brachial plexus roots, phrenic nerve (C3-5) |
| Thoracic (Mid-back) | Back pain, band-like chest tightness, leg weakness, spastic gait, bladder/bowel involvement | Spinal cord - most sensitive zone; little reserve space |
| Lumbar (Lower back) | Lower back pain, leg pain/weakness, foot drop, bladder and bowel dysfunction | Cauda equina nerve roots |
| Sacral | Tailbone/buttock pain, saddle anaesthesia, bladder and bowel dysfunction, sexual dysfunction | Sacral nerve roots, pelvic floor innervation |
Diagnosis
- 1
MRI Spine with Gadolinium Contrast - The gold standard. Provides detail of the spinal cord, nerve roots, tumor location, size, and relationship to surrounding structures. The entire spine should ideally be imaged.
- 2
CT Spine - Essential for assessing bone involvement, vertebral body destruction, and spinal stability, particularly in metastatic disease.
- 3
CT-PET Scan - In metastatic disease, identifies the primary cancer site and extent of systemic spread.
- 4
Neurophysiology - EMG and nerve conduction studies help characterise nerve root dysfunction when imaging and clinical findings do not fully align.
- 5
Biopsy - Not always required for characteristic intradural tumors. For extradural lesions of unknown origin, CT-guided biopsy establishes diagnosis.
Treatment Options
Treatment is highly individualised and depends on tumor type, zone, spinal level, degree of neurological deficit, and whether the tumor is primary or metastatic. The main modalities are surgery, radiation, and systemic therapy.
Surgery
Surgery is the primary treatment for most primary spinal tumors and for metastatic tumors causing spinal cord compression or instability. Goals include complete cure, maximum safe debulking, cord decompression, and spinal stabilisation.
Radiation Therapy
Conventional external beam radiation is used for radiosensitive tumors and as adjuvant treatment. Stereotactic body radiotherapy (SBRT), or spinal radiosurgery, delivers precise high-dose treatment to spinal metastases in 1-5 sessions.
Systemic Therapy
For metastatic disease, targeted therapy, immunotherapy, hormone therapy, or chemotherapy directed at the primary cancer often forms the backbone of treatment.
Corticosteroids
High-dose dexamethasone is given as an emergency measure when acute cord compression is suspected. It reduces swelling around the cord while definitive surgery or radiation is arranged.
Small, asymptomatic intradural extramedullary tumors, particularly in older patients, can be monitored with annual MRI when there is no cord compression and no symptoms.
Spinal Tumor Surgery: Approaches & Techniques
Spinal tumor surgery is performed under general anaesthesia, usually with the patient face-down for posterior approaches. The surgical approach and technique depend entirely on where the tumor sits.
Removal of the lamina to open the spinal canal and access the dura. Laminoplasty reconstructs the arch after tumor removal, preserving stability in selected cases.
The dura is opened under an operating microscope. Meningiomas and schwannomas are dissected free from the cord and nerve roots. Complete removal is the goal.
The cord is opened along the midline under the microscope. Intraoperative monitoring guides every step. Ependymomas are usually resectable completely; astrocytomas require a more conservative approach.
When the vertebral body is destroyed, it is removed and replaced with a cage or graft, secured with screws and rods to decompress the cord and restore stability.
Intraoperative Neurophysiological Monitoring (IONM)
For any surgery near the spinal cord, continuous monitoring of motor and sensory pathways is performed. Signal changes alert the surgeon instantly, allowing the surgical step to be adjusted before a permanent deficit occurs.
Minimally Invasive Techniques
Tubular retractor systems and endoscopic approaches allow selected spinal tumors to be removed through smaller incisions with less muscle disruption, reduced blood loss, shorter hospital stays, and faster recovery.
Spinal cord tumor surgery, particularly intramedullary tumors, is among the most technically demanding procedures in neurosurgery. Outcomes are strongly linked to surgeon and team experience.
Metastatic Spine Disease: A Special Consideration
Metastatic spine tumors are cancer that has spread to the vertebrae from elsewhere in the body. They are the most common spinal tumors overall and affect up to 40% of cancer patients at some point in their illness.
When Surgery Is Needed
Surgery is indicated when there is significant cord or cauda equina compression, mechanical instability, a radioresistant tumor, or when tissue diagnosis is needed.
SBRT / Spinal Radiosurgery
SBRT delivers a focused, ablative dose of radiation to the tumor with sub-millimetre precision while sparing the spinal cord. Local control rates exceed 85-90% at two years in suitable cases.
Separation Surgery
A focused operation removes just enough tumor to create a clear margin between the tumor and spinal cord, then SBRT is delivered precisely to the residual tumor.
Outcomes for patients with spinal metastases have improved dramatically with targeted therapies, immunotherapy, and modern radiotherapy. Early multidisciplinary discussion leads to the best outcomes.
Recovery & Neurological Rehabilitation
Recovery after spinal tumor surgery depends heavily on the degree of preoperative neurological deficit, tumor type, size, location, secondary cord changes, and the completeness of decompression. The strongest predictor is the severity and duration of cord compression before surgery.
What to Expect
After laminectomy for an intradural extramedullary tumor, most patients with mild deficits are mobile within 24-48 hours. Neurological improvement continues over weeks to months. After intramedullary tumor surgery, transient worsening in the first 1-2 weeks can occur as the cord recovers.
Neurological Rehabilitation
Physiotherapy, occupational therapy, and bladder rehabilitation where needed should begin as soon as medically stable. Functional recovery can continue for 12-18 months after surgery.
Follow-up MRI
A post-operative MRI at 3 months is standard. Surveillance intervals then depend on tumor type: annually for benign primary tumors and more frequently for malignant or metastatic disease.
Watch: Spinal Tumor & Complex Brain Tumor Surgery Explained
Our YouTube channel covers difficult spinal and brain tumor cases - explained clearly so patients and families can understand what is possible before making a decision.
Watch on YouTube →Questions to Ask Your Neurosurgeon
- 1
Which compartment is my tumor in - extradural, intradural extramedullary, or intramedullary? - This tells you the most likely tumor type and complexity of surgery.
- 2
Is there any cord signal change on my MRI? - Cord signal change indicates injury to the cord itself and affects recovery prognosis.
- 3
Is complete surgical removal possible, and is that the goal? - For benign primary tumors, complete removal can be curative.
- 4
Will intraoperative neurophysiological monitoring be used? - For any surgery near the spinal cord, the answer should be yes.
- 5
How many spinal cord tumor surgeries do you perform each year? - Surgical volume is strongly associated with outcomes.
- 6
If the tumor is metastatic, has a multidisciplinary team reviewed my case? - Spinal oncology decisions benefit from spine surgery, radiation oncology, and medical oncology input.
- 7
What neurological rehabilitation plan is in place after surgery? - Rehabilitation should be planned before surgery.
Spinal tumor surgery, particularly intramedullary tumors, is highly subspecialised. A second opinion from a high-volume spinal cord tumor centre can be genuinely valuable.
