A rare fast growing brain tumor found near the optic nerves
Original title: Diffuse midline glioma, H3 K27-altered, forming a suprasellar mass: A case report.
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 is a report about one patient, not a test of a new treatment.
The short version
Doctors found a rare, fast growing brain tumor in an unusual spot in one adult man.
What was studied. This is a report about one patient. A 56-year-old man had vision trouble that got worse over 2 months. Doctors scanned his brain and removed part of the tumor.
What they found. Scans showed a mass near the optic chiasm, where the nerves for sight cross. Lab tests showed a diffuse midline glioma: A tumor that starts in the glial cells, the support cells of the brain and spinal cord. Gliomas are given a grade from 1 to 4 describing how the tumor is expected to behave. See the glossary, H3 K27-altered: A change in a histone, one of the proteins that DNA wraps around. When a diffuse glioma has it, and sits in the middle of the brain or spine, it is called a diffuse midline glioma. See the glossary, a grade 4 tumor. He had chemotherapy and radiation after surgery, and died about 5 months after his symptoms started.
What this means, and what it doesn't
What it could mean: This tumor usually starts in the brainstem, thalamus: A part deep in the brain, near its center. It passes messages from the senses and the body on to the rest of the brain. See the glossary, or spinal cord. It can also show up near the optic nerves in an adult. Doctors may want to check for it when they find a mass in this area.
What it doesn't mean: This is one patient's story, not a test of any new treatment. It does not offer a new drug, and it is not a cure. It does not change the care people get today. It only reminds doctors that this tumor can appear in a rare spot.
Source: PubMed, September 11, 2026 · Read the original
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