What are the odds of surviving a astrocytoma brain tumor ?

Depends on the grade: People have the best prognosis with pilocytic astrocytomas and low grade astrocytomas. Higher grade tumors such as an aplastic astrocytomas and glioblastoma multiforme have much lower long term survival rates.

Depends on grade: Astrocytomas are graded from 1 to 4 by the who. Who grade 1 astrocytomas are curable only if it is possible to be removed surgically. Who grade 2, 3, and 4 astrocytomas are not curable. The median survival of a patient with a diagnosis of a grade 2 astrocytoma is 5 years (j neuroonc 31:273, 1997), a grade 3 is 3 years (j neurosurg. 106:575, 2007), and grade 4 is about 1 year (j neuroonc, 1997).