Table 4.

Average survival rates for brain and central nervous system tumors by major histology groupings and age at diagnosis, CBTRUS statistical report: NPCR and SEER, 2007–2011 (data approximated)

Histology	Age group (years)	1-year survival (%)	2-year survival (%)	5-year survival (%)	10-year survival (%)
Pilocytic astrocytoma	0–19	>98	98	97	95
	20–44	>95	95	90	85
Diffuse astrocytoma	0–19	92.5	87	82.5	80
	20–44	90	85	65	45
Oligodendroglioma	0–19	>95	95	92	90
	20–44	98	95	85	65
Oligoastrocytic tumors	0–19	>90	87	82	75
	20–44	>95	90	70	55
Anaplastic oligodendroglioma	0–19	Information not available
	20–44	95	85	65	50
Anaplastic astrocytoma	0–19	65	45	30	25
	20–44	85	70	50	35
Glioblastoma	0–19	55	30	18	12
	20–44	65	35	18	10

Notes: Adapted from Ostrom QT, Gittleman H, Liao P, et al. CBTRUS statistical report: primary brain and central nervous system tumors diagnosed in the United States in 2007–2011. Neuro Oncol. 2014;16(Suppl 4):iv1–iv63, by permission of Oxford Univeristy Press.1

Abbreviations: CBTRUS, Central Brain Tumor Registry of the United States; NPCR, National Program of Cancer Registries; SEER, Surveillance, Epidemiology, and End Results.