When to give radiation after brain metastasis surgery is still unclear
Original title: Preoperative versus postoperative single-fraction or fractionated stereotactic radiosurgery for resected brain metastases: a systematic review and network meta-analysis.
How far along is this research?
- Lab cells
- Animals
- Review
- Tested in people
This looks across many earlier studies rather than running a new one.
This is a review of past studies, not a new treatment.
The short version
Radiation after surgery helps, but the best timing is still not known.
What was studied. Researchers pooled sixteen studies of radiation for brain metastases that were taken out by surgery. Six put people into groups at random. Ten did not.
What they found. In one trial, radiation after surgery lowered the chance of the tumor growing back at that spot. That was compared with no radiation. The studies could not show if radiation before surgery works better than after. They also could not show the best number of radiation sessions.
What this means, and what it doesn't
What it could mean: Radiation after surgery to the spot where the tumor was is backed by solid evidence. The timing and the schedule still depend on your own case. Your care team should pick what fits you best.
What it doesn't mean: This does not mean radiation before surgery is better, or worse. The authors did not test a new treatment. They only looked back at studies already done. It is not a cure, and it does not tell one person what to do. Larger studies in people are still needed.
Source: PubMed, October 14, 2026 · Read the original
This plain-language summary was written by AI and published automatically after passing our automatic safety checks. How we write.