University Cancer Centers

  A brain tumor is a collection of unusual, abnormal cells that have grown out of control in your brain. Some  brain tumor  cells are benign, which means they aren’t cancerous. Others are malignant, which means they are cancerous. The term “ Primary Tumor ” refers to a brain tumor that starts in the brain. They’re categorized as secondary if they started elsewhere in your body and spread to your brain. Types of Brain Tumors Primary brain cancers arise from the brain and central nervous system’s cells. They get their name from the type of cell in which they first appear. There are above 100 different types of brain tumors. The following are the prevalent varieties in adults: Gliomas:  Glial cells, which help maintain nerves healthy, are where these tumors begin. The most common cause is cancer. Gliomas are classified into different groups based on the cells they attack. Adults are the most common victims of astrocytomas. The most dangerous type of glial tumor is gliob...