Bigger tumors linked to less help from a hearing implant
Original title: Implications of Tumor Size on Auditory Brainstem Implant Performance.
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.
Doctors looked back at records of people who already had the implant.
The short version
People with bigger tumors got less hearing benefit from a brain hearing implant.
What was studied. Doctors looked back at records of adults with neurofibromatosis type 2 at one center. All had an auditory brainstem implant, a device placed in surgery to help with hearing.
What they found. Fourteen patients were studied. Their average tumor size before surgery was 22.8 cm3. One year later, their average hearing score was 2.7. Bigger tumors went with lower hearing scores. Even so, some people with big tumors were still helped by the implant.
What this means, and what it doesn't
What it could mean: If your tumor is bigger, the implant may help your hearing less. It may still help. This can help you and your doctor talk about what to expect before surgery.
What it doesn't mean: This does not mean a big tumor rules out an implant. The study only looked back at records of 14 people at one center. It did not test a new treatment, and it is not a promise of a cure. What happened in this small group may not match what happens for you.
Source: PubMed, October 1, 2025 · Read the original
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