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A special scan found the busiest part of a brain tumor, but not all of it

Original title: Utility and limitations of 18F-fluciclovine PET for biopsy targeting in a nonenhancing diffuse glioma with a gliomatosis cerebri-like growth pattern: illustrative case.

How far along is this research?

This was tested in people. That is the most reliable kind of research we share.

This is a report on one patient, not a treatment that has been proven to work.

The short version

A special scan showed doctors where to take a tissue sample, but it missed part of the tumor.

What was studied. Doctors report on one woman in her 50s who came in with a headache. Her tumor did not show up well on a normal MRI, so they used a special PET scan to pick the biopsy spot.

What they found. The scan lit up one spot, and doctors took a sample from there. That spot held fast-growing tumor cells with changes in their genes. Another area that did not light up was mostly scar tissue. But six weeks later, the harm came from places the scan did not light up. Her brain swelled and pressed out of place, and she needed emergency surgery.

What this means, and what it doesn't

What it could mean: For tumors that barely show up on a normal MRI, this scan may help a surgeon pick a better spot to sample. That can lead to a clearer answer about the tumor. But a quiet area on the scan does not mean that area is safe.

What it doesn't mean: This is one patient's story, not a study of many people. It does not show that the scan helps people live longer. It is not a treatment and it is not a cure. The scan missed the parts of the tumor that caused the worst harm, so it cannot show the full spread. Your own care team decides if a scan like this makes sense for you.

Source: PubMed, October 5, 2026 · Read the original

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