How special brain scans may help tell treatment effects apart from tumor growth
Original title: The evolving role of nuclear medicine in differentiating pseudoprogression from tumor progression in gliomas.
How far along is this research?
- Lab cells
- Animals
- Review
- Tested in people
This looks across many earlier studies rather than running a new one.
This is an expert review of where the science is heading, not a new result.
The short version
Experts looked at how a type of scan called PET may help doctors tell if a glioma: A tumor that starts in the glial cells, the support cells of the brain and spinal cord. Gliomas are given a grade from 1 to 4 describing how the tumor is expected to behave. See the glossary is truly growing.
What was studied. This is a review of studies from the past 18 months. It looked at how PET scans can help tell tumor growth apart from changes caused by treatment in people with gliomas.
What they found. After treatment, an MRI can make it look like a tumor is growing when it is not. PET scans can add useful facts to what an MRI shows. Simpler ways to do some PET scans may work about as well as longer ones, but most of the proof comes from looking back at past cases. Newer scan types and computer tools are being explored too.
What this means, and what it doesn't
What it could mean: In the future, PET scans may help doctors better tell if a tumor is really growing. That could mean fewer wrong calls about treatment changes. You can ask your care team if a PET scan fits your situation.
What it doesn't mean: This is a summary of other studies, not a new test in patients. The newer scan types and computer tools still need bigger studies in many hospitals. It does not replace MRI, and it is not a cure or a new treatment.
Source: PubMed, September 18, 2026 · Read the original
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