173 / 1708
Relapse – free survival / residual tumour
Timmermann et al., 2000
months
probability
0
20
40
60
0
0.1
0.2
0.3
0.4
0.5
0.6
0.7
0.8
0.9
1
Compl. res. (n=28)
Incompl. res. (n=27)
p = 0.0043
83.3%
38.5%
62.4%
30.8%
Anapl. ependymoma / HIT 88/89/91
Intracranial ependymoma
Timmermann et al., 2004