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Living with Gliomatosis cerebri

A cancerous brain tumor in which tumor cells spread widely through several areas of the brain.

Understanding Gliomatosis cerebri

Gliomatosis cerebri is a type of cancerous brain tumor (glioblastoma) that grows from brain cells called astrocytes.

It involves at least three lobes of the cerebrum, the main part of the brain, and may affect both sides. There are two types. Type 1 has scattered, widespread tumor cells and no clear mass. Type 2 is similar but also has a detectable mass. It is usually noticed in adulthood.

Signs & symptoms

Symptoms vary from person to person. GARD says they may include:

  • Personality changes
  • Memory problems
  • Headaches
  • Seizures

Not everyone has every symptom. GARD's list comes from the Human Phenotype Ontology.

Diagnosis

  1. Talk with your doctor

    Share the symptoms you've noticed, when they started and your family health history. Notes and photos can help.

  2. See a specialist

    Specialists who may be involved include brain and nervous system specialists and cancer specialists.

  3. Ask which tests can help

    Your care team will decide which exams and tests can confirm the diagnosis.

Care & treatment

Care team
Brain and nervous system specialists (neurologists); Cancer specialists (oncologists)
Expert care
Ask about multidisciplinary care centers for rare conditions
Treatment
GARD doesn't list specific treatments for this condition. Your care team will tailor care to your symptoms.
Research
Clinical trials and observational studies may be options. See the research section below.

General information, not medical advice. Your care team makes the decisions.

Everyday life

Living with a rare condition is easier with support.

  • Connect with Children's Brain Tumor Foundation and other patient organizations
  • Keep notes on symptoms, changes and questions for appointments
  • Ask about patient registries that help research
  • Look into financial aid and travel resources for care visits
Bring these questions to your next doctor visit
Which type of gliomatosis cerebri do I have?
What treatment options are there for my situation?
How will my symptoms and scans be followed over time?

Quick facts

Symptoms usually startAdult

GARD doesn't describe a cause for this condition yet.

Neurological

Also known as: astrocytosis cerebri; gliomatosis; gliomatosis cerebri (morphologic abnormality)

Patient organizations

Source: NIH GARD · Gliomatosis cerebriGARD ID 6514 · GARD page updated September 2026 · Plain-language summary by Know Rare; editorial review pending. General information, not medical advice.

You are more than your diagnosis

Perspectives from people navigating life with Gliomatosis cerebri.

Explore the Gliomatosis cerebri blog

Explore research for Gliomatosis cerebri

Explore actively recruiting Gliomatosis cerebri studies with HealthSpark.

HealthSpark

Find actively recruiting studies for Gliomatosis cerebri with HealthSpark. Share your city to explore research near you.

  • Recruiting studies from ClinicalTrials.gov
  • Share your city to look for research near you
  • Eligibility is confirmed by the study team

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Powered by HealthSpark, our AI chat helper · Study information from ClinicalTrials.gov · Eligibility is confirmed by the study team.

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