Brain radiation given in just two sessions
Original title: Safety and Efficacy of 2-Fraction Stereotactic Radiosurgery for Brain Metastases.
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 was tried in a small group of patients at one center, not in a trial.
The short version
Doctors treated brain tumors with only two radiation sessions, and most tumors stayed under control.
What was studied. Doctors treated 15 patients whose cancer had spread to the brain. They aimed focused radiation at 65 tumors, giving 24 Gy split into 2 sessions.
What they found. Growth was held in check in 92% of the tumors. Each tumor was watched for at least 10 months. One tumor (1.8%) had tissue damage from the radiation that caused symptoms. One other tumor, 2.4 cm in size, needed surgery that was not planned.
What this means, and what it doesn't
What it could mean: Two sessions may be enough for some brain tumors, instead of three to five. That would mean fewer trips to the hospital. If you are facing focused radiation, you can ask your radiation doctor whether this plan fits your case.
What it doesn't mean: This is not a cure, and it did not work for every tumor. This was the first report of its kind, from one cancer center. Only 15 people were treated, which is a very small group. The two session plan was not tested side by side against the longer plans. More study is needed before this becomes normal care everywhere.
Source: PubMed, November 4, 2026 · Read the original
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