Spine | mri / ct
Spinal Stenosis
Spinal stenosis means narrowing of the spinal canal or nearby nerve spaces. Depending on severity and location, this can contribute to nerve symptoms, walking limitation, or pain, but imaging findings still need to be matched with symptoms and exam.
Spinal stenosis means the spinal canal is narrower than expected on imaging.
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What it means
Spinal stenosis means narrowing of the spinal canal or nearby nerve spaces. Depending on severity and location, this can contribute to nerve symptoms, walking limitation, or pain, but imaging findings still need to be matched with symptoms and exam.
Also seen as: canal stenosis, spinal canal narrowing.
How common it is
Spinal stenosis is a common degenerative spine imaging finding, especially with age.
Common age-related spine finding
Spinal stenosis is frequently reported on lumbar and cervical imaging in adults with degenerative change.
Common causes
- Degenerative disc and joint change
- Ligament thickening
- Disc bulge or herniation
- Congenital or post-surgical narrowing in some patients
When doctors worry
- The report describes severe canal narrowing
- There are progressive neurologic symptoms or weakness
- Symptoms suggest significant nerve compression or myelopathy
Typical follow-up
- Correlate imaging with walking tolerance, pain pattern, and exam
- Use MRI findings together with neurologic symptoms
- Specialist follow-up may be considered when narrowing is severe
Example report wording
Moderate lumbar spinal stenosis at L4-L5.
See phrase explanationSevere central canal stenosis with crowding of the cauda equina.
See phrase explanation
Common report phrases linked to this finding
Broad-based disc bulge at L4-L5.
"Broad-based disc bulge at L4-L5." is radiology report language linked to disc bulge and is best understood in the context of the full imaging report.
Moderate lumbar spinal stenosis at L4-L5.
"Moderate lumbar spinal stenosis at L4-L5." is radiology report language linked to spinal stenosis and is best understood in the context of the full imaging report.
Severe central canal stenosis with crowding of the cauda equina.
"Severe central canal stenosis with crowding of the cauda equina." is radiology report language linked to spinal stenosis and is best understood in the context of the full imaging report.
Common size, location, and severity variations
Frequently asked questions
Does spinal stenosis always need surgery?
No. Management depends on symptom severity, neurologic findings, and how much the narrowing matters clinically.
Can stenosis be present without major symptoms?
Yes. Imaging findings do not always match symptom severity exactly.
Clear medical disclaimer
Educational information only. Always consult your clinician for medical advice.
This page is educational only and should be used to understand report language, not to diagnose a condition or replace clinician review.
Sources
Sources and medical review process
RadDx finding pages are written for patient education using consumer-friendly radiology references, plain-language terminology resources, and cautious summary review of common imaging follow-up frameworks.
- Reviewed by
- RadDx Editorial Team
- Last reviewed
- March 10, 2026
- RadiologyInfo.org
RSNA and ACR
- MedlinePlus
U.S. National Library of Medicine
- NCI Dictionary of Cancer Terms
National Cancer Institute
Sources are used for patient education context and terminology support. They do not replace clinician review of your individual report.
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