Sphenoid BoneSphenoid SinusitisParanasal Sinus DiseasesParanasal Sinus NeoplasmsCerebrospinal Fluid RhinorrheaPneumoencephalographySkull BaseSella TurcicaCranial Fossa, MiddleSkull NeoplasmsSkull Base NeoplasmsOtorhinolaryngologic Surgical ProceduresEthmoid SinusTomography, X-Ray ComputedMeningoceleMeningiomaEndoscopyEnophthalmosAmyotrophic Lateral SclerosisCavernous SinusMagnetic Resonance ImagingEncephaloceleRadiography, DentalEthmoid BoneFibrous Dysplasia of BoneFrontal SinusPituitary NeoplasmsAbducens Nerve DiseasesNeuronavigationOphthalmoplegiaOsteomaOrbitTemporal MuscleLateral Line SystemMaxillary SinusParanasal SinusesMeningeal NeoplasmsSkullOrbital DiseasesFrontal BoneNeurofibromatosis 1HeadacheArachnoidNeuroaspergillosisCavernous Sinus ThrombosisCraniofacial AbnormalitiesNasal ObstructionVasculitis, Central Nervous SystemNeurosurgical ProceduresEpistaxisCraniotomyBrain AbscessPituitary ApoplexyParietal BoneNasal CavityAspergillosisHypothalamic Area, LateralFacial BonesSphenoid SinusLateral VentriclesHistiocytoma, Malignant FibrousPolypsDura MaterAirFatal OutcomeCone-Beam Computed TomographyForeign BodiesNasopharyngeal NeoplasmsSinusitisOptic NerveRetrospective StudiesGeniculate BodiesNeurologic ExaminationAdenomaCerebral AngiographyImage Processing, Computer-Assisted