Paranasal SinusesSinusitisEndoscopyParanasal Sinus DiseasesRhinitisOtorhinolaryngologic Surgical ProceduresNasal PolypsMaxillary SinusEthmoid SinusEthmoid SinusitisMucoceleFrontal SinusSphenoid SinusEthmoid BoneEndoscopesMaxillary SinusitisCerebrospinal Fluid RhinorrheaChronic DiseaseParanasal Sinus NeoplasmsOrbitTurbinatesSkull BaseAkinetic MutismNasal SeptumOlfaction DisordersTomography, X-Ray ComputedTreatment OutcomeNasal SpraysProspective StudiesCavernous SinusNose DiseasesRetrospective StudiesQuality of LifeCranial SinusesNasal LavageFollow-Up StudiesSinus of ValsalvaMagnetic Resonance ImagingOtolaryngologyCarotid SinusPapilloma, InvertedNasal ObstructionCoronary SinusOrbital DiseasesOsteitisNasal CavityPostoperative ComplicationsSinus Thrombosis, IntracranialSick Sinus SyndromePostoperative CareNasal MucosaTachycardia, Sinus