What Is a Brain Tumor? A brain tumor (also called an intracranial tumor) is a cluster of abnormal cells that grows in or around your brain. There are over a hundred types of tumors that develop in ...

Brain tumors are abnormal growths of cells in the brain. In general, a benign tumor is less serious than a malignant tumor. But a benign tumor can still cause problems in your brain by pressing on ...

You may even wonder if you have a brain tumor. But keep in mind that most headaches aren’t due to brain tumors. In fact, fewer than 90,000 people in the United States are diagnosed with a brain ...