When you say brain tumor, this is known to be the type of cells that may grow in the brain. There are instances when brain tumors can become very serious especially when they start to grow in some parts of the brain wherein they cannot be removed. Take note that not all brain tumors are brain cancer. Brain cancer is the condition wherein there is a growth of abnormal cells in the brain.
These abnormal cells can turn into a tumor that is malignant. Take note that the malignant tumors in the brain will have the tendency to become aggressive. In fact, they can rob healthy cells of the nutrients, oxygen, and other things that the cells may need.