Tsarin ciwon daji shine tsari na tantance iyakar abin da ciwon daji ya tasowa ta hanyar girma da yaduwa. Ayyukan zamani shine sanya lamba daga I zuwa IV zuwa ciwon daji, tare da kasancewa ciwon daji da kuma IV kasancewa ciwon daji wanda ya yadu zuwa iyakar abin da matakan tantancewar. Matsayin gabaɗaya yana yin la'akari da girman ƙwayar cuta, ko ya mamaye gabobin da ke kusa, yawancin yanki na yanki (kusa da) ƙwayoyin lymph nawa ya bazu zuwa (idan akwai), kuma ko ya bayyana a wurare masu nisa ( metastasized ). Ba a aiwatar da tsarin tsarawa ga astrocytoma, wanda a maimakon haka an bayyana shi azaman "I-IV". Grade IV astrocytoma, wanda aka fi sani da glioblastoma multiforme, shine ciwon daji na farko na kwakwalwa wanda aka fi gani a cikin shekaru 7th na rayuwa. Za a iya raba matakin ciwon daji zuwa mataki na asibiti da kuma mataki na pathologic. A cikin tsarin TNM (Tumor, Node, Metastasis), mataki na asibiti da kuma pathologic ana nuna su ta hanyar ƙananan "c" ko "p" kafin mataki (misali, cT3N1M0 ko pT2N0).