Spinal tumor: types, symptoms, diagnosis, and treatment

Overview of spinal tumors, their anatomical classification, common causes, clinical features, diagnostic approach and management options, with distinctions between primary and metastatic lesions.

Spinal tumors are abnormal growths that affect the structures of the spine, including the vertebrae, the coverings of the spinal cord (dura and meninges) and the spinal cord itself. They may be primary (originating in or around the spinal column) or metastatic (spread from cancer elsewhere) and range from benign to malignant. Early recognition is important because progressive compression of neural tissue can cause permanent injury; see further information.

Anatomical classification

Extradural: outside the dura mater, usually involving vertebrae; the most common location for metastatic disease.
Intradural-extramedullary: inside the dura but outside the spinal cord; common primary tumors include meningiomas and nerve-sheath tumors.
Intramedullary: within the spinal cord substance itself; includes ependymomas and astrocytomas.

Common primary spinal tumors include schwannomas, meningiomas, ependymomas and astrocytomas, while metastatic deposits often arise from cancers of the lung, breast, prostate, kidney and thyroid. Some tumors are slow-growing and discovered incidentally; others progress rapidly and present with acute neurological decline.

Symptoms and diagnosis

Typical symptoms: localized back pain, radicular pain radiating along a nerve root, weakness, sensory changes, and bowel or bladder dysfunction.
Red flags: rapidly worsening weakness, loss of sphincter control or signs of spinal cord compression.
Diagnostic tools: MRI is the imaging test of choice; CT, myelography and targeted biopsy provide additional information when needed.

Treatment is determined by tumor type, location and the patient’s overall condition. Options include surgical decompression and excision, radiation therapy (including stereotactic techniques), systemic therapies such as chemotherapy or targeted agents for sensitive cancers, and corticosteroids to reduce edema and improve symptoms acutely. Goals of management are relief of compression, preservation or restoration of neurologic function, and control of tumor growth.

Historically, outcomes improved with advances in imaging and microsurgical techniques. Important distinctions for clinicians are the lesion's relationship to the dura and cord, and whether the lesion is primary or metastatic, since this guides prognosis and treatment. Prompt evaluation of new or progressive spinal symptoms leads to better functional outcomes.