Cranial Fossa, MiddleCranial Fossa, AnteriorCranial Fossa, PosteriorAtaxiaCerebellar AtaxiaSkull BaseFriedreich AtaxiaArachnoid CystsOtologic Surgical ProceduresCranial Nerve NeoplasmsTrigeminal Nerve DiseasesSpinocerebellar AtaxiasCraniotomyTemporal BoneSkull Base NeoplasmsFacial Nerve DiseasesCerebellopontine AngleDura MaterArnold-Chiari MalformationCentral Nervous System Vascular MalformationsGait AtaxiaEthmoid BoneEar DiseasesOsteomaEthmoid SinusInfratentorial NeoplasmsTomography, X-Ray ComputedMagnetic Resonance ImagingSphenoid BonePetrous BoneMastoidMucoceleNeurilemmomaZygomaAtaxia TelangiectasiaHematoma, SubduralCerebral VeinsOccipital BoneChondromatosis, SynovialHematoma, Subdural, IntracranialSubdural EffusionArachnoidFrontal SinusSkull NeoplasmsAtaxia Telangiectasia Mutated ProteinsMeningeal NeoplasmsFacial ParalysisParanasal Sinus NeoplasmsHematoma, Epidural, CranialNeurosurgical ProceduresSphenoid SinusPterygopalatine FossaArteriovenous FistulaSkullOrbital DiseasesEar, MiddleCavernous SinusOrbital NeoplasmsCerebral AngiographyIron-Binding ProteinsCerebellar DiseasesCerebellumImaging, Three-DimensionalDandy-Walker SyndromePosterior Cerebral ArteryCerebellar NeoplasmsPosterior Cruciate LigamentMachado-Joseph DiseaseTreatment OutcomeTrinucleotide Repeat ExpansionFourth VentricleUveitis, PosteriorHypothalamus, PosteriorOssification of Posterior Longitudinal LigamentTrinucleotide RepeatsMandibular CondyleSyringomyelia