Two checks during a brain biopsy, compared
Original title: Comparison of the predictive value of intraoperative MRI and intraoperative histopathological examination for diagnostic stereotactic biopsy yield in patients with brain gliomas.
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.
These checks are already used in some operating rooms, but this was only a look back at past patient records.
The short version
Doctors compared two ways of checking, during surgery, whether a brain biopsy grabbed usable tissue.
What was studied. Doctors looked back at records of 85 brain biopsies done at one hospital in Prague between April 2012 and February 2025. All used a frame free guiding system. They compared an MRI scan taken during the surgery with a quick check of the tissue under a microscope during the surgery.
What they found. The final lab test gave a clear diagnosis in 97.6% of the 85 biopsies. In 3.5% of patients, another sample had to be taken during the same surgery, and one person needed a repeat biopsy later under anesthesia again. The MRI check during surgery spotted a usable sample more often than the quick tissue check did. Using these checks did not change how often the biopsy gave an answer.
What this means, and what it doesn't
What it could mean: If you need a brain biopsy, checks like these may help the surgical team feel sure they got usable tissue before the surgery ends. The MRI check may also show problems during the surgery. That is about getting a clear diagnosis, not about treating the tumor.
What it doesn't mean: This is not a new treatment and it is not a cure. It does not change how a tumor is treated after the diagnosis. This was a look back at old records from one hospital, not a planned trial. Both checks are already used in some hospitals, and the study found they did not change how often the biopsy gave an answer. Results from one center may not hold true elsewhere.
Source: PubMed, July 15, 2026 · Read the original
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