Meningiomas caused by past radiation came back sooner
Original title: Radiation-induced cranial meningiomas are associated with earlier relapse: a propensity score-matched cohort study.
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.
Doctors looked back at records of people already treated, so this is not a new treatment.
The short version
Meningiomas that formed after earlier radiation came back sooner than other ones.
What was studied. Doctors at one hospital looked at 39 people whose meningioma formed after past radiation. They compared them to 195 people whose meningioma was not linked to radiation. All had surgery to remove the tumor between 2007 and 2023.
What they found. The tumors linked to past radiation came back more often, 28% versus 17%. People in the radiation group were more likely to have had brain surgery before, 38.5% versus 4.1%. They were also more likely to get radiation after surgery, 33.3% versus 11.3%. Taking out the whole tumor was linked to a longer time before it grew back.
What this means, and what it doesn't
What it could mean: If you had radiation to the head in the past and later got a meningioma, your doctor may watch you more closely. The study also supports removing as much of the tumor as is safe. Your own care plan still depends on your tumor and your health.
What it doesn't mean: This does not mean these tumors are more dangerous by nature. The authors say plainly that their results should not be read that way. This was a look back at old records at one hospital, not a trial of a new treatment. Other things they could not measure may have affected the results. It is not a cure and it does not change what care you can get today.
Source: PubMed, September 22, 2026 · Read the original
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