A Neurosurgeon Explains: Glioblastoma Multiforme ... Glioblastoma (GBM), also referred to as a grade IV astrocytoma, is a fast-growing and aggressive brain tumor.SkiptoMainContentThesitenavigationutilizesarrow,enter,escape,andspacebarkeycommands.Leftandrightarrowsmoveacrosstoplevellinksandexpand/closemenusinsublevels.UpandDownarrowswillopenmainlevelmenusandtogglethroughsubtierlinks.Enterandspaceopenmenusandescapeclosesthemaswell.Tabwillmoveontothenextpartofthesiteratherthangothroughmenuitems.MENUMembershipJointheAANSMemberBenefitsMemberDirectoryMyAANSInternationalActivitiesAANS/CNSSectionsAANSCareerCenterbackground-image-awomanlookingatascreenAnnualMeeting2021AANSAnnualScientificMeeting-RegisterOnline-OnlineProgramMeetingDates&LocationsExhibiting2022AANSAnnualScientificMeeting-SubmitAbstracts-BookHousingbackground-image-awomanlookingatascreenEducationNeuroU–OnlineCMEFrontRowSeriesLiveCoursesSNAPAdvancedPractitionerCoursesSubspecialtyCMEMeetingsCalendarTheRhotonCollectionTheNeurosurgicalAtlasJointProvidershipbackground-image-awomanlookingatascreenPublicationsTheJournalofNeurosurgeryAANS360MobileAppAANSNeurosurgeonAANSUpdatesNeurosurgeryBlogAANSBookstore2021AANSGuidetoCodingEducationCatalogbackground-image-awomanlookingatascreenPatientsFindaBoard-certifiedNeurosurgeonNeurosurgicalConditionsandTreatmentsNeurosurgeryAwarenessMonthPatientEducationVideosbackground-image-awomanlookingatascreenAdvocacyAbouttheWashingtonOfficeAdvocacyNewsDCPressRoomNeurosurgeryBlogNeurosurgeryPACPositionStatementsWashingtonE-newsletterbackground-image-awomanlookingatascreenTraineesResidents/FellowsMedicalStudents-NeurosurgeryMatchYoungNeurosurgeonsCommitteeVolunteerCorpsGrantsandFellowshipsResidencyDirectoryAcademicFellowshipDirectorybackground-image-awomanlookingatascreenAANSPatientsNeurosurgicalConditionsandTreatmentsGlioblastomaMultiformeGlioblastomaMultiformeANeurosurgeonExplains:GlioblastomaMultiformeVikramC.Prabhu,MD,FAANSYourbrowserdoesnotsupporttheaudioelement.Glioblastoma(GBM),alsor