HemorrhoidectomyHemorrhoidsAnal CanalSurgical StaplingAnus NeoplasmsDiathermyAnus DiseasesFissure in AnoSuturesDigestive System Surgical ProceduresPostoperative HemorrhageSemicircular CanalsManometryPain, PostoperativeFecal IncontinenceEar CanalElectrocoagulationRectumOintmentsSpinal CanalProctoscopyUrinary RetentionLigationAdenoma, VillousRoot Canal PreparationHospitals, CommunitySuture TechniquesTreatment OutcomeMitomycinPain MeasurementNitrergic NeuronsPressureRoot Canal IrrigantsHong KongDental Pulp CavityPostoperative CareRoot Canal Filling MaterialsColonoscopyAPUD CellsColostomyUrogenital SystemPelvic FloorCosts and Cost AnalysisDefecationRectal ProlapseLength of StayCarcinoma, Squamous CellPostoperative ComplicationsProspective StudiesConstipationImaging, Three-DimensionalRetrospective StudiesChi-Square DistributionTooth Apex