Data source
astrocytoma, Cancer
PILOCYTIC ASTROCYTOMA, ASTROCYTOMA, CANCER
The data for this study were selected from the SEER database established by the National Cancer Institute, and we selected the database containing 13 registries with radiotherapy data, which provided data that could support the completion of this study. A total of 6154 patients diagnosed with astrocytoma of the brain from 2004 to 2015 were extracted from the database, and a total of 2214 patients were screened according to the inclusion and exclusion criteria. The types of astrocytoma include diffuse astrocytoma, anaplastic astrocytoma, pilocytic astrocytoma, unique astrocytoma variants, and astrocytoma, NOS above five types.