Two Types of Brain Tumors
August 9th, 2008image source: www.science.nationalgeographic.com
There are two main types of brain tumors: those that start in the brain (primary) and those that spread from cancer somewhere else in the body (metastasis). Primary brain tumors happen less often, and when they do, they are mostly malignant (cancerous). A malignant tumor is a mass or clump of cancer cells [...]