Metastatic Brain Tumors

What Is It?

A metastatic brain tumor is cancer that has spread (metastasized) from another part of the body to the brain. It is also called a secondary tumor, lesion or brain metastasis (plural: metastases). In contrast, a primary brain tumor starts in the brain, not in another part of the body.

A tumor is an abnormal mass of tissue. It occurs when cells divide more than they should or don't die when they should.

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