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Brain Tumors What is a brain tumor? A brain tumor is an abnormal growth of tissue in the brain. The tumor can either originate in the brain itself, or come...

Anaplastic Astrocytomas Anaplastic astrocytomas are one of two primary forms of high-grade (malignant) astrocytomas, both of which are more common than low-grade astrocytomas. Anaplastic astrocytomas comprise approximately 30 percent of...