NCIt synonyms : Grade III Astrocytoma; Grade III Astrocytic Neoplasm; Malignant Astrocytoma; Grade III Astrocytic Tumor; Grade 3 Astrocytic Tumor; Grade 3 Astrocytoma; High-Grade Astrocytoma; High Grade Astrocytoma; Grade 3 Astrocytic Neoplasm;
NCIt related terms : Astrocytoma, anaplastic; High-grade astrocytoma, NOS;
NCIt definition : A diffusely infiltrating, WHO grade 3 astrocytoma with focal or dispersed anaplasia,
and a marked proliferative potential. It may arise from a low-grade astrocytoma, but
it can also be diagnosed at first biopsy, without indication of a less malignant precursor
lesion. It has an intrinsic tendency for malignant progression to glioblastoma. (WHO);