MucoceleParanasal Sinus DiseasesMucusFrontal SinusLip DiseasesFrontal SinusitisEthmoid SinusitisEthmoid SinusOtorhinolaryngologic Surgical ProceduresCervix MucusSphenoid SinusMaxillary SinusPseudomyxoma PeritoneiEndoscopyRetention (Psychology)Urinary RetentionTomography, X-Ray ComputedRetrospective StudiesMucinsMucociliary ClearanceTreatment Outcome