Sphenoid SinusSphenoid BoneSphenoid SinusitisParanasal Sinus DiseasesHeadacheParanasal Sinus NeoplasmsCerebrospinal Fluid RhinorrheaPneumoencephalographySella TurcicaNoseMucoceleSkull BaseHeadache DisordersInflammationEthmoid SinusMaxillary SinusCavernous SinusFrontal SinusParanasal SinusesTension-Type HeadacheEnophthalmosCluster HeadacheEndoscopyRadiography, DentalEthmoid BoneSkull Base NeoplasmsMeningoceleTomography, X-Ray ComputedOtorhinolaryngologic Surgical ProceduresPituitary NeoplasmsOsteomaVascular HeadachesMagnetic Resonance ImagingCranial SinusesElectronic NoseNeuronavigationMigraine DisordersAbducens Nerve DiseasesPituitary ApoplexySinus of ValsalvaCraniofacial AbnormalitiesHeadache Disorders, SecondaryNose DiseasesNose Deformities, AcquiredCarotid SinusCranial Fossa, MiddleAspergillosisForeign BodiesSkull NeoplasmsAnti-Bacterial AgentsCoronary SinusCone-Beam Computed TomographyInflammation MediatorsSinus Thrombosis, IntracranialAntibiotic Prophylaxis