title: Dissemination of primary central nervous system tumors of childhood: incidence and clinical implications.
mesh_terms: D000293:Adolescent; D000818:Animals; D001932:Brain Neoplasms / Q000401:mortality / Q000473:pathology*; D002648:Child; D004806:Ependymoma / Q000401:mortality / Q000473:pathology; D006801:Humans; D008527:Medulloblastoma / Q000401:mortality / Q000473:pathology*; D008577:Meningeal Neoplasms / Q000473:pathology / Q000628:therapy; D008578:Meninges / Q000473:pathology*; D009361:Neoplasm Invasiveness; D012189:Retrospective Studies