Table 2.

Survival outcomes for adult brainstem gliomas.

Entire cohort, N = 143, median OS (months)	32.1
Median OS by WHO Grade and histology (months):
Glioblastoma	14.8*
Anaplastic astrocytoma	21.1
Diffuse astrocytoma	77.1
Glioma NOS	96.2
No biopsy	40.0
Median OS by imaging features (months):
Enhancing	15.3**
Non-enhancing	61.5
Median OS by age (months):
18–21 years***	25.9#
22–39	34.7
40–59	34.3
60 and over	14.2
Median OS by anatomic site (months):
Midbrain	66.0+
Pons	25.3
Medulla	51.3

^*p = 0.0104, log-rank test for trend, comparing OS for DA, AA, and GB.

^**p = 0.0007.

^***p = 0.2015 log-rank test for trend.

^#p = 0.20 log-rank test for trend comparing all ages.

⁺p = 0.6434 log-rank test for trend comparing all sites, p = 0.0816, log-rank test, comparing pontine to other tumors sites.