Supratentorial NeoplasmsPrognosisEpendymomaCraniotomyNeuroectodermal Tumors, PrimitiveCerebellar DiseasesInfratentorial NeoplasmsGlioma, SubependymalCerebral HemorrhageBrain NeoplasmsCerebellar NeoplasmsAstrocytomaBrain Stem NeoplasmsMagnetic Resonance ImagingNeurosurgical ProceduresGliomaCranial Fossa, PosteriorTomography, X-Ray ComputedMedulloblastomaPancreatic NeoplasmsGangliogliomaHematoma, Epidural, CranialRetrospective StudiesHematomaIntracranial PressureCerebral VentriclesNeoplasmsTreatment OutcomeCerebral Ventricle NeoplasmsArachnoidMuscle HypertoniaNeuroectodermal TumorsSurvival RateMeningeal NeoplasmsNeoplasms, Cystic, Mucinous, and SerousNeuroendoscopyCerebral VentriculographyImmunohistochemistry