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What causes brain tumors?

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Find out more about the different brain tumor types and treatments, including surgery, radiation therapy and chemotherapy. read more

In adults, secondary brain tumors are far more common than are primary brain tumors. Any cancer can spread to the brain, but common types include: Breast cancer; Colon cancer; Kidney cancer; Lung cancer; Melanoma; Risk factors. In most people with primary brain tumors, the cause of the tumor is not clear. read more

Symptoms of brain tumors vary according to the type of tumor and the location. read more

The cause of most brain and spinal cord tumors is not fully understood, and there are very few well-established risk factors. But researchers have found some of the changes that occur in normal brain cells that may lead them to form brain tumors. read more

A brain tumor is a collection, or mass, of abnormal cells in your brain. Your skull, which encloses your brain, is very rigid. Any growth inside such a restricted space can cause problems. Brain tumors can be cancerous (malignant) or noncancerous (benign). When benign or malignant tumors grow, they can cause the pressure inside your skull to increase. read more

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