A New Brain Tumor Found 10 Months After Brain Radiation
Original title: Olfactory Groove Meningioma Detected 10 Months after Cranial Radiotherapy in a Metastatic Ewing Sarcoma Survivor: A Case Report.
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 is a report of what happened to one patient, not a test of any treatment.
The short version
Doctors report one woman who grew a slow-growing, non-cancerous brain tumor less than a year after she had radiation to her brain.
What was studied. This is a report about one patient. She was a 38-year-old woman with Ewing sarcoma in her right thigh that had spread to her brain. She had surgery, chemotherapy, and then radiation to her brain, given as 54 Gy in 27 doses.
What they found. Brain scans taken before her radiation showed nothing in the area behind the nose and above the eyes. Ten months after treatment ended, she had worsening headaches, repeated vomiting, and seizures. New scans found a tumor in that spot pressing on the front of her brain. Surgeons removed all of it. Lab tests showed it was a meningioma, the slowest growing type, and not a return of her sarcoma. Scans 1 year later showed no sign of it coming back.
What this means, and what it doesn't
What it could mean: If you have had radiation to your brain, this is a reminder to keep going to your follow-up scans and appointments. New or worsening headaches, vomiting, or seizures are worth telling your care team about, even soon after treatment. In this case the tumor was found, removed completely, and had not come back a year later.
What it doesn't mean: This is a report about one single person. It does not prove that radiation caused her tumor, and the doctors say so themselves. It does not mean this will happen to you if you have brain radiation. This kind of tumor showing up this fast is described as very rare. This is not a new treatment, not a change to anyone's care, and not a cure for anything.
Source: PubMed, May 29, 2026 · Read the original
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