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Depending on the patient, radiation or chemotherapy after surgery is an option. Individuals with grade 2 astrocytoma have a 5-year survival rate of about 34% without treatment and about 70% with radiation therapy. [6] The median survival time is 4 years. [6] III Anaplastic astrocytoma; Consist of anaplastic astrocytomas.
Anaplastic astrocytoma is a rare WHO grade III type of astrocytoma, which is a type of cancer of the brain. In the United States, the annual incidence rate for anaplastic astrocytoma is 0.44 per 100,000 people.
The WHO grade has four categories of tumors: Grade 1 tumors are slow-growing, nonmalignant, and associated with long-term survival. Grade 2 tumors are relatively slow-growing but sometimes recur as higher grade tumors. They can be nonmalignant or malignant. Grade 3 tumors are malignant and often recur as higher grade tumors.
[3] [2] Grades III and grade IV are considered malignant astrocytomas. Anaplastic astrocytomas are considered by the WHO to be a grade III astrocytoma and Glioblastoma is a grade IV both are referred to high-grade glial tumors. [2] Ependymal tumors are another glial tumor type of the central nervous system.
Astrocytomas are divided into two categories: low grade (I and II) and high grade (III and IV). Low grade tumors are more common in children, and high grade tumors are more common in adults. Malignant astrocytomas are more prevalent among men, contributing to worse survival. [57] Pilocytic astrocytomas are grade I tumors. They are considered ...
Among people with PXA who were able to have their tumors completely resected during surgery, there is a long-term survival rate of 90%. After incomplete resection, the long-term survival rate is higher than 50%. Morbidity is determined by the type and evolution of the tumor, with high-graded anaplastic tumors causing more fatalities. [citation ...
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