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All about brain tumor primary brain tumors secondary brain tumors types of brain tumors causes of brain tumor risk factors for brain tumors complications of brain tumor symptoms of brain tumors diagnosing brain tumor brain tumor treatment

What causes brain tumor?

The majority of brain tumors have abnormalities of genes involved in cell cycle control, causing uncontrolled cell growth. These abnormalities are caused by alterations directly in the genes, or by chromosome rearrangements which change the

function of a gene.

Patients with certain genetic conditions (i.e., neurofibromatosis, von Hippel-Lindau disease, Li-Fraumeni syndrome, and retinoblastoma) also have an increased risk to develop tumors of the central nervous system. There have also been some reports of people in the same family developing brain tumors who do not have any of these genetic syndromes. Genetic abnormalities that cause brain tumors are not usually inherited but mostly occur as a result of environmental insults or other factors that affect genetic materials (DNA) in the cells.

Research has been investigating parents of children with brain tumors and their past exposure to certain chemicals. Some chemicals may change the structure of a gene that protects the body from diseases and cancer. Workers in oil refining, rubber manufacturing, and chemists have a higher incidence of certain types of tumors. Which, if any, chemical toxin is related to this increase in tumors is unknown at this time.

Patients who have received radiation therapy to the head as part of prior treatment for other malignancies are also at an increased risk for new brain tumors.

More information on brain tumor

What is brain tumor? - Brain tumors are abnormal growths made up of cells whose growth and division are no longer under the control of the body.
What are primary brain tumors? - A primary malignant brain tumor is one that originates in the brain itself. Primary brain tumors are named due to the cell types.
What are secondary brain tumors? - A secondary (metastatic) brain tumor occurs when cancer cells spread to the brain from a primary cancer in another part of the body.
What types of brain tumors are there? - About half of all primary brain tumors are known collectively as gliomas. Some brain tumors are categorized by their location in the brain.
What causes brain tumors? - The majority of brain tumors have abnormalities of genes involved in cell cycle control, causing uncontrolled cell growth.
What're the risk factors for brain tumors? - Risk factors for brain tumors include age, environmental or occupational risk factors, diseases associated with brain tumors.
What're the complications of brain tumors? - Brain tumors may lead to an emergency complication known as hydrocephalus. A brain tumor can cause temporary or permanent brain damage.
What're the symptoms of brain tumors? - Symptoms of brain tumors vary depending on the size and location of tumor. Many symptoms are related to an increase in pressure in or around the brain.
How is brain tumor diagnosed? - Brain tumor is diagnosed through a combination of symptoms and evaluation of neurological functions.
What's the treatment for brain tumors? - The approach for treating brain tumors is to reduce the tumor as much as possible using surgery, radiation treatment, chemotherapy, or investigative procedures.
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