Finding the right tests…
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Emergency services available 24 x 7
Finding the right tests…
MRI
A sore, lump, or patch on the tongue that hasn't healed in a couple of weeks is one of the symptoms NIDCR flags as worth getting checked, and this scan is how doctors look closely at the tongue itself once something suspicious is found. It measures how deep an abnormal area reaches into the tongue muscle - its depth of invasion - a detail that matters more for treatment planning than width alone. One imaging study found tumors reaching past 5mm in depth had roughly double the rate of lymph node spread compared with shallower ones, 52% versus 24%. The same study found MRI's depth measurements closely tracked what pathologists later measured directly on tissue. No radiation is involved.
This scan images the tongue's soft tissue in detail, measuring how far an abnormal area extends into the muscle - its depth of invasion - along with its width and whether it reaches the floor of the mouth. That depth measurement is a recognized factor in whether nearby lymph nodes are also involved.
A tongue tumor's depth of invasion - how far it reaches into the muscle, rather than how wide it looks on the surface - is described in one imaging study as the single most important factor in predicting whether nearby lymph nodes are also involved. Tumors deeper than 5mm showed roughly double the rate of nodal spread compared with shallower ones in that study.
- Tumor depth of invasion into the tongue muscle - Width and surface extent of the abnormal area - Whether the lesion reaches the floor of the mouth - Involvement of surrounding muscle or nearby structures
The same study found strong agreement between MRI and what pathologists measured directly after surgery, with MRI depth measurements averaging within about 2mm of the histopathology findings. Staging based on MRI matched the pathology-based staging in most cases.
Contrast is often used to define the tumor's edges more clearly. Ask your doctor or the centre whether contrast applies to your specific scan.
MRI uses magnets and radio waves rather than X-rays, so no radiation is involved.
One imaging study found depth of invasion was the single most important factor in predicting whether a tongue tumor had spread to nearby lymph nodes. Tumors deeper than 5mm showed roughly double the rate of lymph node involvement compared with shallower ones.
In one study, MRI's depth measurements closely matched what pathologists measured directly after surgery, differing by only about 2mm on average. That level of agreement is part of why it's used for planning before surgery.
Contrast is often used to define a tongue lesion's edges more clearly. Ask your doctor or the centre whether it applies to your specific scan.
No. MRI uses magnets and radio waves rather than X-rays, so no radiation is involved.
This page is general information about the test, not medical advice. Your own report's reference ranges apply — please discuss your results with your doctor.
It shows detail about size, depth, and extent that helps guide diagnosis and treatment planning, but a definite answer usually still needs a biopsy.
A tongue lesion can extend into the floor of the mouth, and knowing whether it does changes how surgery is planned. This scan checks for that extension as part of the same exam.
Ask your doctor or the centre directly about preparation for your appointment, since it can depend on whether contrast is planned.