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Neurosciences and Behavioral Health Center

Glioblastoma Multiforme (GBM)

Glioblastoma multiforme (GBM) is the most common glioma (a type of brain cancer). It represents nearly one fourth of all primary brain tumors. This cancer starts in the glial cells, which are cells that help nerve cells work.

This condition can develop suddenly. It can also develop from a lower grade, less cancerous brain tumor. Most cases are located in the cerebral hemisphere of the brain. The cancer can also begin in the spinal cord or brain stem.

Nucleus Image
Copyright © Nucleus Medical Media, Inc.Causes

Factors that increase your chances of developing GBM include:

  • Age: over 50 years old
  • Ethnicity: Caucasians, Hispanics, Asians
  • Having a low-grade brain tumor, which occasionally develops into a higher-grade tumor
  • Having one of the following genetic disorders:
    • Neurofibromatosis
    • Tuberous sclerosis
    • Von Hippel-Lindau disease
    • Li-Fraumeni syndrome
    • Turcot's syndrome
  • Having had radiotherapy
  • Working in the synthetic rubber or petroleum refining industries
  • Exposure to vinyl chloride or pesticides
  • Having had computed tomography (CT) scans during childhood

GBM Symptoms

Symptoms include:

  • New onset headaches — more than 30 percent of patients
  • New onset seizures — 20 percent to 30 percent of patients
  • Progressive cognitive dysfunction — depends on the location of the tumor; problems with vision, language, motor function or sensation may occur
  • Progressive neurological deficits, including weakness
  • Personality changes
  • Behavioral changes, development of inappropriate behaviors
  • Memory loss

Diagnosis

Images and scans may be taken of your brain with:

  • CT scan
  • MRI scan
  • Functional MRI (fMRI)
  • Positron emission tomography (PET) scan

Your brain activity may be measured with:

  • MRS scan
  • Electroencephalogram (EEG)

Your bodily fluids and tissues may be tested with:

  • Tumor biopsy
  • Spinal tap

Treatment

Optune

Tested at UVA and other sites in clinical trials, Optune, treats this most deadly form of brain cancer with electrodes that produce "tumor-treatment fields." Learn about the effectiveness of this new device.

Surgery is often done to confirm diagnosis and relieve headache, but doctors cannot completely remove the cancer. Other types of treatment may include:

  • Radiation treatment is used to further decrease the size of the tumor.
  • Chemotherapy is used to increase survival time and quality of life.
  • Steroids to suppress swelling, antiseizure medication to suppress seizures, and pain medications are also used.

Even with aggressive treatment, few patients survive more than five years after diagnosis. However, there is evidence that medical and surgical intervention can increase life expectancy and improve quality of life.

A multi-disciplinary approach is important for you and your family. This approach may involve:

  • Support group
  • Psychotherapy and psychiatry
  • Pain management
  • Hospice care

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Content was created using EBSCO’s Health Library. Edits to original content made by Rector and Visitors of the University of Virginia. This information is not a substitute for professional medical advice.

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