Neoplastic Cells, CirculatingAdenocarcinomaBiopsyBiopsy, NeedleAdenocarcinoma, MucinousLung NeoplasmsChromatography, High Pressure LiquidEsophageal NeoplasmsPancreatic NeoplasmsBarrett EsophagusAdenocarcinoma, PapillaryStomach NeoplasmsImmunohistochemistryCarcinoma, Pancreatic DuctalAdenocarcinoma, Bronchiolo-AlveolarImage-Guided BiopsyIonic LiquidsChromatography, LiquidBiopsy, Fine-NeedleBiopsy, Large-Core NeedleCardiaTumor Markers, BiologicalLiquid CrystalsColonic NeoplasmsPrognosisNeoplasm StagingProstatic NeoplasmsRetrospective StudiesPrecancerous ConditionsEsophagogastric JunctionSensitivity and SpecificitySentinel Lymph Node BiopsyCarcinoma, Squamous CellGene Expression Regulation, NeoplasticCell Line, TumorImmunoenzyme TechniquesMetaplasiaEndometrial NeoplasmsNeoplasms, Multiple PrimaryKeratin-7ProstateNeoplasm InvasivenessIntestinal NeoplasmsTreatment OutcomeTime FactorsLymphatic MetastasisTumor Cells, CulturedTomography, X-Ray ComputedFatal OutcomePolymerase Chain ReactionDisease ProgressionDuodenal NeoplasmsPredictive Value of TestsEsophagusReproducibility of ResultsRNA, MessengerCarcinoma, Signet Ring CellCarcinoma in SituRectal NeoplasmsGastric MucosaColorectal NeoplasmsUterine Cervical NeoplasmsCecal NeoplasmsCarcinoma, EndometrioidMammary Neoplasms, ExperimentalReverse Transcriptase Polymerase Chain ReactionAdenocarcinoma, Clear CellAdenomaAmpulla of VaterSurvival RateDNA, NeoplasmIntestinal MucosaBreast NeoplasmsCommon Bile Duct NeoplasmsNeoplasm MetastasisTissue Array AnalysisFollow-Up StudiesNeoplasm ProteinsMutationKeratin-20Genes, rasIleal NeoplasmsGene Expression ProfilingRectumAntineoplastic AgentsSurvival AnalysisCarcinoma, AdenosquamousCase-Control StudiesPancreaticoduodenectomyCarcinoma, Non-Small-Cell LungProstatic Intraepithelial NeoplasiaHyperplasiaHelicobacter pyloriProspective StudiesJejunal NeoplasmsCarcinomaBronchoscopyNeoplasm TransplantationDuodenumCarcinoembryonic Antigen