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Gliomas are tumors that grow in various parts of the brain. Optic gliomas can affect:One or both of the optic nerves, which carry visual information to the brain from each eyeThe optic chiasm, the area where the optic nerves cross each other in front of the hypothalamus of the brainAn optic glioma may also grow along with a hypothalamic glioma.
Review Date: 7/14/2006

A hypothalamic tumor is an abnormal growth in the hypothalamus gland, which is located in the brain.
Review Date: 10/31/2006

A primary brain tumor is a group (mass) of abnormal cells that start in the brain. This article focuses on primary brain tumors in adults.See also:Brain tumor - metastatic (cancer that has spread to the brain)Brain tumor - children
Review Date: 10/31/2006