tumors of lower grades of malignancy ( astrocytoma iii , malignant ependymoma , medulloblastoma ) in our series have a statistically significant higher median bcnu-sensitivity ( 63.5 % , p less than 0.05 ) and are sensitive to more drugs ( 3.6 drugs , median out of six selected drugs , p less than 0.01 ) than tumors of higher grades of malignancy ( astrocytoma iv , glioblastoma multiforme ; 29.54 % bcnu-sensitivity , 1.4 effective drugs ) .
C0004114
astrocytoma
C0017636
glioblastoma multiforme