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Mask-based Gamma Knife radiation worked well for vestibular schwannoma

Original title: Frameless gamma knife stereotactic radiosurgery for over two hundred vestibular schwannoma patients - a single institution experience.

How far along is this research?

This was tested in people. That is the most reliable kind of research we share.

This treatment is already used in hospitals today, and this report is a look back at patients who got it.

The short version

A hospital looked back at its patients and found that Gamma Knife radiation given with a mask, instead of a head frame, kept most of these tumors from growing.

What was studied. Doctors at one hospital reviewed 206 people with a vestibular schwannoma on one side, treated between 2017 and 2024. All had Gamma Knife radiation held still by a mask instead of a frame screwed to the skull. Scans were available for 112 of them.

What they found. Tumors were under control in 97.1% of patients at 1 year and 93.7% at 3 years. At the last check, 75.9% had tumors that were stable or smaller, and 7 patients (6.3%) had tumors that grew. Among the patients who could still hear well before treatment, 40 had hearing tests afterward, and useful hearing was kept in 71.1% at 1 year and 33.8% at 3 years.

What this means, and what it doesn't

What it could mean: If you are offered Gamma Knife for this kind of tumor, the mask may be an option instead of a metal frame fixed to your head. The doctors say tumor results looked similar to older frame-based reports. Hearing loss over time is still a real risk with this treatment.

What it doesn't mean: This is not a cure, and it is not a new treatment. Gamma Knife is already used for these tumors. This was a look back at records at one hospital, not a study that compared masks against frames head to head. The hearing numbers came from a small group, and the 3-year hearing data was limited. The authors themselves say better planned studies are still needed.

Source: PubMed, July 28, 2026 · Read the original

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