Bigger brain tumors at diagnosis were linked to a higher risk of dying
Original title: Does earlier diagnosis and treatment of brain tumors matter? Time-to-treatment intervals and tumor size at detection; impact on survival and other patient outcomes.
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 looked back at records of real patients, but it is not a treatment.
The short version
People whose brain tumor was bigger when it was found had a higher risk of dying.
What was studied. Doctors reviewed records of 1,196 people with brain tumors in Southeast Scotland. They looked at tumor size and the wait before treatment, from 2010 to 2020.
What they found. The average wait from the first visit to treatment was 161 days. The average tumor was 4.06 cm across. For glioblastoma: A glioma that is given grade 4. Grade 4 is the highest grade there is. The tumor grows fast. Treatment usually starts soon after it is found. It often means surgery, and then radiation and chemotherapy. See the glossary and other grade 4 tumors, each extra 1cm raised the risk of dying from the tumor by about 11%.
What this means, and what it doesn't
What it could mean: The size of a tumor when it is first found seems to matter. The authors did a calculation about a 6cm glioblastoma: A glioma that is given grade 4. Grade 4 is the highest grade there is. The tumor grows fast. Treatment usually starts soon after it is found. It often means surgery, and then radiation and chemotherapy. See the glossary found 3 months earlier. They expect the risk of dying from the tumor would drop by 17% to 26%.
What it doesn't mean: This does not mean faster care is proven to help you live longer. The study only looked back at old records, so it cannot show what caused what. In fact, longer waits before treatment were linked to fewer deaths here, not more. The 17% to 26% figure is an estimate, not something measured in patients. This is not a new treatment and it is not a cure.
Source: PubMed, September 28, 2026 · Read the original
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