A brain tumor or intracranial neoplasm occurs when abnormal cells form within the brain. There are two main types of tumors: malignant or cancerous tumors and benign tumors.Cancerous tumors can be divided into primary tumors that start within the brain, and secondary tumors that have spread from somewhere else, known as brain metastasis tumors. This article deals mainly with tumors that start within the brain. All types of brain tumors may produce symptoms that vary depending on the part of the brain involved
New techniques for imaging scans are being researched. These may help doctors better track how well treatment is working and watch for possible tumor recurrence or growth.Researchers are examining biomarkers to find better ways of using blood or other tests to determine the presence of a brain tumor before symptoms begin. Immunotherapy, also called biological response modifier (BRM) therapy, is designed to boost the body's natural defenses to fight the cancer. It uses materials either made by the body or in a laboratory to improve, target, or restore immune system function. Different methods are being studied for brain tumors, such as the use of dendritic cells or the use of vaccines aimed against a specific molecule on the surface of the tumor cells. Several methods are currently being tested in clinical trials.
Population in 2012:198.4m. People newly diagnosed with cancer (excluding NMSC) / yr:437,600. Age-standardised rate, incidence per 100,000 people/yr: 205.5.Risk of getting cancer before age 75 20.8%. People dying from cancer /yr:224,700