
A brain tumor occurs when cells
within the brain divide and multiply uncontrollably causing a mass called tumor
to form. A brain tumor can either be benign (non-cancerous) or it can be
malignant (cancerous). Brain tumors can be formed within the actual brain
structure, in the brain cavities, and in other parts of the central nervous
system, such as the spinal column. Brain tumors may also develop from cancer in
other organs within a person, which have spread through other parts of the
body, usually through the bloodstream.
Statistics of Brain Cancer
In the United States, about 43,000
cases of brain tumors were reported, according to the Central Brain Tumor
Registry of the United States. Brain tumors make up abou [...]