You got the call that your MRI results are in, you pulled up the patient portal, and now you're staring at a report full of words like "mild disc desiccation," "foraminal narrowing," and "no acute findings." You have no idea if this is good news or not.
Most patients leave that portal more confused than before. This walks through what the terms actually mean, which findings usually matter and which usually don't, and what to ask your orthopaedic surgeon when you sit down to talk through it.
How MRI reports are structured
Every radiology report follows a similar format: clinical history (what the ordering doctor said was going on), technique (how the scan was done), findings (what the radiologist saw), and impression (what they think it means). The impression is the paragraph that matters most to you.
The radiologist who wrote that report has never met you. They're describing what they see on the images for another doctor, not for a patient. That's why so much of it sounds alarming. It's a clinical document, not a prognosis.
Common terms and what they actually mean
"No acute findings" — This is good. "Acute" means sudden or recent. No acute findings means nothing looks new, infected, or broken. The radiologist isn't saying nothing is wrong; they're saying nothing looks like an emergency.
"Degenerative changes" — This is the most overused phrase in radiology, and it scares people more than it should. Degenerative changes just means normal wear. By age 40, most adults have some degree of disc degeneration visible on MRI, including people with no back pain at all. Studies consistently show poor correlation between degenerative findings on MRI and actual symptoms.
"Disc desiccation" — Discs dry out as you age. This is essentially the same as degenerative changes, just describing the water content of the disc. A desiccated disc on MRI is almost always age-related, not a sign of injury.
"Disc bulge" vs. "disc herniation" — These aren't the same thing, and the difference matters. A bulge is when the disc edges extend slightly beyond the vertebrae, like a slightly flat tire. A herniation is when the inner material pushes through the outer layer. Herniations are more likely to cause nerve symptoms; bulges often don't. Either can appear on an MRI and cause no pain at all.
"Foraminal narrowing" — The foramina are the openings on the sides of each vertebra where nerve roots exit. Narrowing there can compress those nerves, causing pain, numbness, or weakness that radiates into your arm or leg. This is the kind of finding that actually correlates with symptoms and often drives treatment decisions.
"Spinal stenosis" — The spinal canal itself is narrowed. Mild stenosis is common in older adults and often asymptomatic. Moderate to severe stenosis, especially with neurological symptoms, is more clinically significant.
"Signal change" — Tissue that appears brighter or darker than expected on certain sequences. Depending on context, signal change can indicate inflammation, swelling, prior injury, or tumor. Your surgeon will know which based on the sequence and location.
"No evidence of malignancy" — Feel relieved about that one.
The incidental finding problem
MRI is incredibly sensitive. It picks up things that have been there for years and were never causing problems. When a radiologist reports a small cyst, a minor anatomical variant, or mild joint changes, that doesn't mean those findings are responsible for your symptoms. They might be completely unrelated.
Surgeons call these "incidentalomas" — findings that look significant on paper but have nothing to do with why you're actually hurting. A good orthopaedic surgeon will match your imaging to your physical exam and history, not just treat the report.
The correlation question
The most important thing your surgeon should be figuring out: do your symptoms match the imaging? That question cuts both ways.
If you have severe nerve pain shooting down your left leg and your MRI shows a large disc herniation pressing on the nerve at exactly that level, that's meaningful. Surgery or an injection targeting that level makes sense.
If you have widespread low back aching and your MRI shows mild degenerative changes at multiple levels, that's not a clean match. Treating those mild changes surgically probably won't fix the aching, because they probably aren't causing it.
The MRI is evidence. It doesn't decide the treatment by itself.
Questions to ask your surgeon
Come to your imaging review with these:
- Which finding do you think is responsible for my symptoms?
- Which findings are incidental and can be ignored?
- Does this finding explain the location and type of pain I'm having?
- What would change if we repeated this MRI in three months?
- Is there anything here that would get worse if we took a conservative approach first?
That last one matters a lot. Some findings, like cauda equina syndrome, infection, tumor, or fracture, need urgent action. Most don't. If your surgeon isn't distinguishing between "we should watch this" and "we need to act now," ask them to make that distinction explicitly.
When the report doesn't match how you feel
This happens more than people expect. Patients sometimes come in with severe pain and relatively mild imaging. Others come in with dramatic imaging and surprisingly few symptoms.
Neither situation is unusual. Pain is not on the MRI. It's processed in the brain and influenced by sleep, stress, and a dozen other factors. Some of the most miserable backs in the world look mediocre on imaging. Some people with severe disc herniations go to the gym four days a week.
If your imaging and symptoms don't match, that's not a reason to panic. It's a reason to have a longer conversation with your doctor.
A note on "normal for your age"
Surgeons use that phrase, and it frustrates patients. It can feel dismissive. But it's worth taking seriously: if a finding is expected for your age and doesn't correlate with your specific symptoms, treating it aggressively probably won't help. The actual problem might respond better to physical therapy, injections, or lifestyle changes than to surgery.
The MRI is one piece of information. A good surgeon uses it alongside your history, your physical exam, and your goals to build a plan that makes sense for you specifically.
