Brain scans in CNS lymphoma show extra spots that fade after treatment
Original title: MRI patterns of non-enhancing T2-FLAIR hyperintense lesions with dynamic change in primary CNS lymphoma.
How far along is this research?
- Lab cells
- Animals
- Review
- Tested in people
This was tested in people. That is the most reliable kind of research we share.
This was a look back at scans from real patients, not a test of any treatment.
The short version
Some people with brain lymphoma had extra bright spots on their MRI, away from the main tumor, and those spots shrank or went away after treatment.
What was studied. Doctors looked back at the MRI scans of 87 people treated for primary central nervous system lymphoma, a lymphoma that starts in the brain. They looked for bright spots on a scan type called T2-FLAIR that did not light up with contrast dye and were not next to the main tumor.
What they found. Among 87 patients, 10 patients (11.5%) had these separate bright spots that clearly shrank or disappeared after treatment. Most were in the juxtacortical and deep white matter (7 lesions). The rest were in periventricular white matter (2 lesions), the basal ganglia (1 lesion), and the infratentorial area (1 lesion). People with these spots were more likely to have several tumor areas and to have them on both sides of the brain.
What this means, and what it doesn't
What it could mean: These faint spots may sometimes be tumor, not just swelling or other changes. Because they faded with treatment, the authors think doctors may need to count them when judging how much tumor is there at the start. If you have this diagnosis, it is a reason to ask your doctor what all the areas on your scan mean.
What it doesn't mean: This is not a new treatment, and it is not a cure. It was a look back at scans that were already taken at one hospital, not a trial. It does not prove those spots are tumor, and the authors say the question needs more study. Nothing here changes the treatment you would get today.
Source: PubMed, July 3, 2026 · Read the original
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