Statistical Table 8

 

Two-, Five-, and Ten-Year Observed and
Relative Survival Rates for Malignant Brain Tumors,
SEER 1973-1994

HISTOLOGY
No. of Cases Two Year

Five Year

Ten Year
Obs. Rel. Obs. Rel. Obs. Rel.

Glioblastoma
10,354 8.4 8.8 3.0 3.4 1.6 2.3

Astrocytoma, NOS
6,268 44.0 45.4 32.2 34.9 23.7 28.4

Pilocytic astrocytoma
518 90.4 90.8 86.0 86.9 82.7 84.6

Diffuse astrocytoma
522 63.5 64.7 46.2 48.6 32.3 36.1

Anplastic astrocytoma
1,473 43.9 45.1 28.0 30.0 18.3 21.4

Oligodendroglioma
955 75.8 77.0 59.0 61.7 39.9 44.2

Anaplastic oligodendroglioma
86 57.4 58.8 34.6 36.8 b b

Ependymoma/
anaplastic ependymoma
755 75.3 76.2 61.7 63.5 51.4 54.9

Glioma, malignant, NOS
1,903 31.7 33.3 23.5 26.6 17.1 22.2

Mixed glioma
483 71.6 72.6 53.4 55.3 34.6 37.6

Embryonal/primitive/medulloblastoma
921 68.4 68.6 50.8 51.2 40.9 41.6

Neuroepithelial
214 49.0 50.0 37.8 40.1 29.0 33.0

Malignant neuronal/glial,
neuronal and mixed

127 63.1 63.5 48.3 48.9 46.9 48.1
TOTAL: All brain and other CNSc 26,275 33.8 35.1 24.1 26.6 17.8 22.2
a Rates are an estimate of the percentage of patients alive at two, five, and ten years, respectively.
b Too few cases to estimate.
c Includes histologies not listed in this table.
Abbreviations used: SEER, Surveillance, Epidemiology, and End Results; NOS, not otherwise specified; CNS, central nervous system.

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