title: Grading astrocytomas.
abstract: Brain tumor grading has always been tied to predicting prognosis. Originally, the grading system had four grades, then three-grade systems became popular; now, four grades are in vogue. There is less evidence than might be supposed for the validity of these systems, however.
authors.affiliation: Tufts University School of Medicine, Boston, Massachusetts.
authors.forename: L S
authors.initials: LS
authors.lastname: Adelman
mesh_terms: D001254:Astrocytoma / Q000145:classification / Q000401:mortality / Q000473:pathology* / Q000601:surgery; D001707:Biopsy, Needle; D001921:Brain / Q000473:pathology; D001932:Brain Neoplasms / Q000145:classification / Q000401:mortality / Q000473:pathology* / Q000601:surgery; D005909:Glioblastoma / Q000145:classification / Q000401:mortality / Q000473:pathology* / Q000601:surgery; D006801:Humans; D011379:Prognosis; D015996:Survival Rate