A brain tumor is an abnormal growth or mass of cells in or around the brain. It is also called a central nervous system tumor. Tumors that develop in the brain are called primary tumors. Tumors that spread to the brain after forming in a different part of the body are called secondary tumors or metastatic tumors. This video focuses on primary malignant brain tumors.

Chapters: 0:00 What is a primary malignant brain tumor? 0:31 What are the main kinds of malignant brain tumors? 1:35 How are brain tumors graded? 1:57 How are primary malignant brain tumors treated? 2:53 When should you see your provider?

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