Spinal schwannoma

A spinal schwannoma is a tumour arising from Schwann cells surrounding a spinal nerve root. Usually benign and slow-growing, it can still cause pain, weakness or spinal cord compression. Its effects depend mainly on location, size and changes over time.

Lire cette fiche en français

A nerve sheath tumour

Schwannomas often lie within the spinal canal but outside the cord; some extend through a neural foramen. Most are isolated lesions. Multiple tumours or other associated findings may prompt assessment for schwannomatosis and a discussion of genetic counselling where appropriate.

Manifestations and warning signs

Root-pattern pain, tingling or weakness may resemble a herniated disc. A larger mass can affect walking by compressing the cord. Rapidly increasing weakness, new inability to walk, urinary retention or saddle numbness requires immediate emergency assessment. Slow growth does not rule out clinically important compression.

Diagnosis

Contrast-enhanced MRI characterizes the mass and its relationship to roots and cord. An exact diagnosis may require examination of tissue obtained during surgery. Specialists distinguish schwannoma from neurofibroma, meningioma and other lesions; imaging appearances do not always establish the tumour type with certainty.

Treatment and follow-up

Clinical and MRI surveillance may be appropriate for some small, stable lesions. A symptomatic or growing tumour may be removed with the aim of preserving nerve function. Operative risks, possible residual tissue and the required follow-up should be discussed individually rather than assuming that every lesion needs the same approach.

Role of TAGMED care

Neurosurgical assessment comes before treatment of pain potentially caused by a tumour. TAGMED may only consider support for coexisting musculoskeletal symptoms after medical clearance. Traction, laser and shockwave therapy do not remove a schwannoma or replace the imaging follow-up recommended by the specialist.

Frequently asked questions

Does benign mean harmless?

No. A benign mass can still compress important nervous tissue.

Is it always inherited?

No. Many schwannomas occur as isolated tumours.

Does all nerve-root pain indicate a tumour?

No. Many more common explanations are possible.

Is immediate surgery always needed?

No. Growth and functional effects determine the appropriate timetable.

Is follow-up needed after removal?

Yes. It depends on resection, tissue findings and the individual clinical context.

Educational information from The Spine Page. This entry does not replace an individual assessment. Documentary version: October 12, 2026. Sylvain Desforges, B.Sc., D.O., N.D., osteopath and naturopath.