Colorectal NeoplasmsColonoscopyAdenomaColonic PolypsPneumoradiographyColonic NeoplasmsAdenocarcinomaRectal NeoplasmsRectumIntestinal MucosaColonEarly Detection of CancerTumor Markers, BiologicalNeoplasm StagingImmunohistochemistryNeoplasm InvasivenessRetrospective StudiesColorectal Neoplasms, Hereditary NonpolyposisRisk FactorsPrognosisSensitivity and SpecificityPilot ProjectsColon, DescendingColorectal SurgeryNeoplasmsPancreatic NeoplasmsLiver NeoplasmsColon, SigmoidHT29 CellsDNA, NeoplasmSigmoidoscopyAdenomatous PolypsCarcinomaNeoplasms, Multiple PrimaryNeoplasms, Cystic, Mucinous, and SerousAdenocarcinoma, MucinousFluorouracilColon, AscendingGene Expression Regulation, NeoplasticNeoplasm ProteinsNeoplasm MetastasisIntestinal PolypsCarcinoembryonic AntigenAdenomatous Polyposis ColiColonic DiseasesCell Line, TumorColectomyOrganoplatinum CompoundsLeucovorinSkin NeoplasmsNeoplasms, Second PrimaryGenes, APCLung NeoplasmsCase-Control StudiesMicrosatellite RepeatsCamptothecinMutationMass ScreeningGastrointestinal NeoplasmsColon, TransverseAzoxymethaneIntestinal NeoplasmsMutS Homolog 2 ProteinKidney NeoplasmsSigmoid NeoplasmsAntigens, Neoplasmbeta CateninGenes, rasDNA MethylationAntineoplastic AgentsNeoplasm Recurrence, LocalTreatment OutcomeRectal DiseasesPrecancerous ConditionsTumor Cells, CulturedNeoplasms, ExperimentalSurvival RateProto-Oncogene Proteins B-rafThyroid NeoplasmsOvarian NeoplasmsSurvival AnalysisHCT116 CellsAppendiceal NeoplasmsDNA Mismatch RepairMyeloproliferative DisordersIncidenceAntineoplastic Combined Chemotherapy ProtocolsProspective StudiesTime FactorsRNA, MessengerPolymerase Chain ReactionAdenomatous Polyposis Coli ProteinFollow-Up StudiesNeoplasm TransplantationCecal NeoplasmsReverse Transcriptase Polymerase Chain ReactionDisease ProgressionDNA Mutational Analysisras ProteinsDiverticulum, Colon