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Glioblastoma, previously known as glioblastoma multiforme (GBM), is the most aggressive and most common type of cancer that originates in the brain, and has a very poor prognosis for survival. [6] [7] [8] Initial signs and symptoms of glioblastoma are nonspecific. [1]
The prognosis is worst for these grade 4 gliomas. Few patients survive beyond 3 years. Individuals with grade 4 astrocytoma have a median survival time of 17 [6] weeks without treatment, 30 [6] weeks with radiation, and 37 [6] weeks with surgical removal of most of the tumor followed by radiation therapy. Long-term survival (at least five years ...
Diagnosis was slightly more common in males, at approximately 7.5 cases per 100 000 people, while females saw 2 fewer at 5.4. Deaths as a result of brain cancer were 5.3 per 100 000 for males, and 3.6 per 100 000 for females, making brain cancer the 10th leading cause of cancer death in the United States.
The concept of grading of the tumors of the central nervous system, agreeing for such the regulation of the "progressiveness" of these neoplasias (from benign and localized tumors to malignant and infiltrating tumors), dates back to 1926 and was introduced by P. Bailey and H. Cushing, [1] in the elaboration of what turned out the first systematic classification of gliomas.
Gliosarcoma is a malignant cancer, and is defined as a glioblastoma consisting of gliomatous and sarcomatous components. [3] Primary gliosarcoma (PGS) is classified as a grade IV tumor and a subtype of glioblastoma multiforme in the 2007 World Health Organization classification system (GBM). [4]
The mean age at clinical presentation is 42. The age distribution includes children and has a wider range than other diffuse astrocytomas (diffuse WHO grade II astrocytoma, anaplastic astrocytoma, ordinary glioblastoma). [14] [15] [16] The giant-cell glioblastoma affects males more frequently (the M/F ratio is 1.6). [1]
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