Colonic PolypsPolypsAdenomatous PolypsColonoscopyColonic NeoplasmsAdenomaNasal PolypsIntestinal PolypsAdenomatous Polyposis ColiColonColorectal NeoplasmsColon, DescendingSensitivity and SpecificityColonography, Computed TomographicColon, AscendingLimit of DetectionColon, SigmoidPolymerase Chain ReactionPolyphosphatesIntestinal MucosaColon, TransverseReproducibility of ResultsDiverticulum, ColonColonic DiseasesPeutz-Jeghers SyndromeAdenocarcinomaGenes, APCHyperplasiaSinusitisRectal NeoplasmsRectal DiseasesPrecancerous ConditionsRectumHT29 CellsIntestinal Polyposis