When cancer spreads to other areas of the body, it’s often treated with the same chemotherapies and other drugs used for the original type of cancer. However, when cancer spreads to the brain through the bloodstream, it can be difficult to use these same treatments as effectively. This is because it’s difficult for chemotherapy drugs to break the semi-permeable blood-brain barrier.
The next best options for these patients are usually surgery or radiation therapy. Surgery is not always possible due to a growth’s location within the brain or the presence of more than one cancerous growth.