Colorectal NeoplasmsStomachColonoscopyStomach NeoplasmsColonic NeoplasmsAdenomaRectal NeoplasmsEarly Detection of CancerColorectal Neoplasms, Hereditary NonpolyposisAdenocarcinomaSigmoidoscopyFluorouracilColonic PolypsNeoplasm MetastasisOrganoplatinum CompoundsNeoplasm StagingTumor Markers, BiologicalOccult BloodPrognosisLeucovorinGene Expression Regulation, NeoplasticCamptothecinLiver NeoplasmsColonMass ScreeningCarcinomaRisk FactorsHT29 CellsCell Line, TumorSurvival AnalysisCarcinoembryonic AntigenHCT116 CellsAntineoplastic Combined Chemotherapy ProtocolsSurvival RateRectumNeoplasm ProteinsMicrosatellite InstabilityMutationColorectal SurgeryGenetic Predisposition to DiseaseAdenomatous PolypsMicrosatellite RepeatsDNA MethylationProspective StudiesNeoplasm InvasivenessImmunohistochemistryAntineoplastic AgentsDNA, NeoplasmAdenomatous Polyposis ColiMutS Homolog 2 ProteinCase-Control StudiesRetrospective StudiesStomach DiseasesNeoplasmsFollow-Up StudiesIntestinal PolypsProto-Oncogene Proteins B-rafDisease ProgressionGerm-Line MutationRiskLung NeoplasmsTreatment OutcomeMice, Nuderas ProteinsDNA Mismatch RepairDisease-Free SurvivalColectomyReverse Transcriptase Polymerase Chain ReactionBreast NeoplasmsAntimetabolites, AntineoplasticGenes, APCIntestinal MucosaAntibodies, Monoclonal, HumanizedGenotypeRegistriesUnited StatesRNA, MessengerPolymerase Chain ReactionGenes, rasIncidenceNeoplasm Recurrence, LocalPolymorphism, GeneticRisk AssessmentProstatic NeoplasmsOdds RatioCohort Studiesbeta CateninSensitivity and SpecificityAntibodies, MonoclonalOvarian NeoplasmsDNA Mutational AnalysisProto-Oncogene ProteinsAdaptor Proteins, Signal TransducingGastric MucosaKaplan-Meier EstimateAge FactorsMultivariate AnalysisColonography, Computed TomographicGene Expression ProfilingDrug Resistance, Neoplasm