GBMs are the most common and most malignant of the primary CNS
neoplasms, representing 15% to 20% of these tumors.
Approximately half of all Astrocytomas are GBMs. GBM is the most
common supratentorial neoplasm in adults. GBMs usually occur in
patients over 50 and are unusual in patients under 30. Like
Anaplastic Astrocytomas, GBMs can occasionally be found at any
age; Anaplastic Astrocytomas and GBMs are among the four most
common primary Brain tumors in infants and children under 2
years of age. Various symptoms occur with GBM, including
seizure, focal neurological deficits, and stroke like syndromes.
The first symptom of a Brain tumor of any type can be a
headache, since these tumors act as masses within the boney
skull and thus cause increased pressure in the Brain. The
headache associated with a Brain tumor, is frequently worse in
the morning and is accompanied by vomiting. Other symptoms of a
Brain tumor can include seizures, weakness or numbness of a side
or part of the body, or such subtle symptoms su