Colorectal NeoplasmsRectumIntestinal MucosaColonAdenomaColonic PolypsAberrant Crypt FociColonic NeoplasmsAdenocarcinomaAdenomatous Polyposis ColiPrecancerous ConditionsImmunohistochemistryColitis, UlcerativeDNA MethylationTumor Markers, BiologicalGastric MucosaMouth MucosaCell DivisionColonoscopyNasal MucosaColorectal SurgeryColorectal Neoplasms, Hereditary NonpolyposisRectal NeoplasmsAdenomatous PolypsSigmoidoscopyFluorouracilMucous MembraneIntestinal PolypsLiver NeoplasmsNeoplasm StagingOrganoplatinum CompoundsLeucovorinPrognosisCarcinomaCarcinoembryonic AntigenCase-Control StudiesHT29 CellsMass ScreeningCamptothecinGene Expression Regulation, NeoplasticEarly Detection of CancerMicrosatellite RepeatsGenes, APCNeoplasm MetastasisMutS Homolog 2 ProteinColectomyRectal DiseasesHCT116 CellsRisk FactorsOlfactory MucosaCell Line, TumorDNA, NeoplasmMutationColonic DiseasesLaryngeal MucosaProto-Oncogene Proteins B-rafNeoplasm ProteinsProspective StudiesGenes, rasTreatment OutcomeDNA Mismatch RepairSurvival Analysisbeta CateninSurvival Rateras ProteinsAntineoplastic Combined Chemotherapy ProtocolsRNA, MessengerPolymerase Chain ReactionGenetic Predisposition to DiseaseGerm-Line MutationRetrospective StudiesAdenomatous Polyposis Coli ProteinTime FactorsAntineoplastic AgentsReverse Transcriptase Polymerase Chain ReactionColonography, Computed TomographicNeoplasm InvasivenessAntimetabolites, AntineoplasticDisease ProgressionAdaptor Proteins, Signal TransducingDNA Mutational AnalysisFollow-Up StudiesAntibodies, MonoclonalDuodenumIncidenceLymphatic MetastasisBase Pair MismatchEnemaAdenocarcinoma, MucinousStomach NeoplasmsHepatectomyIntestine, SmallGenotypeCohort StudiesProto-Oncogene ProteinsAnti-Inflammatory Agents, Non-SteroidalPolymorphism, GeneticAntibodies, Monoclonal, HumanizedNeoplasm Recurrence, LocalImmunoenzyme Techniques