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A Brain Tumor Found by Chance on a Prostate Cancer Scan

Original title: Incidental Glioblastoma Multiforme Detected on 18F-DCFPyL PET/CT Prostate Cancer Staging.

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 about one person, not a new treatment.

The short version

A scan meant to check prostate cancer found a brain tumor no one was looking for.

What was studied. This is a report about one man, age 77. He had a scan called 18F-DCFPyL PET/CT to check the stage of his prostate cancer.

What they found. The scan showed a bright spot in his brain. It was in the right frontal lobe, the front right part of the brain. Doctors did surgery to remove it. Tests on the tissue showed it was a glioblastoma: A glioma that is given grade 4, the highest grade. It grows fast. Treatment usually starts soon after it is found. It often means surgery, then radiation and chemotherapy. See the glossary, CNS WHO grade: A number from 1 to 4 for how a tumor is likely to behave. Since 2021 it is written in plain numbers, not Roman ones. Gene results can set it too. See the glossary 4, the IDH gene change: A small change in a tumor's IDH gene. It is the first thing your team looks at when naming an adult glioma, and it can affect which treatments are offered. Your pathology report says whether your tumor has it. See the glossary wild-type kind.

What this means, and what it doesn't

What it could mean: A scan done for one cancer can sometimes show a problem somewhere else in the body. If a scan shows an unexpected spot in the brain, doctors may look into it further.

What it doesn't mean: This is one person's story, not a study. It does not test a new treatment, and it is not a cure. It does not mean this scan should be used to search for brain tumors. Nothing here changes the care you get today.

Source: PubMed, September 8, 2026 · Read the original

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