AdenocarcinomaAdenocarcinoma, MucinousLung NeoplasmsPancreatic NeoplasmsEsophageal NeoplasmsAdenocarcinoma, PapillaryBarrett EsophagusCarcinoma, Pancreatic DuctalStomach NeoplasmsAdenocarcinoma, Bronchiolo-AlveolarImmunohistochemistryCardiaTumor Markers, BiologicalPrognosisDelayed DiagnosisSensitivity and SpecificityColonic NeoplasmsEarly DiagnosisPrenatal DiagnosisRetrospective StudiesNeoplasm StagingEsophagogastric JunctionBiopsyKeratin-7Carcinoma, Squamous CellGene Expression Regulation, NeoplasticCell Line, TumorNeoplasms, Multiple PrimaryEndometrial NeoplasmsPrecancerous ConditionsTomography, X-Ray ComputedDiagnosisProstatic NeoplasmsTreatment OutcomeIntestinal NeoplasmsFatal OutcomeImmunoenzyme TechniquesPredictive Value of TestsTime FactorsPolymerase Chain ReactionDiagnostic ErrorsNeoplasm InvasivenessDuodenal NeoplasmsSurvival RateColorectal NeoplasmsTumor Cells, CulturedCarcinoma, Signet Ring CellRisk FactorsCecal NeoplasmsMetaplasiaDisease ProgressionCarcinoma, EndometrioidAdenocarcinoma, Clear CellFollow-Up StudiesSurvival AnalysisRectal NeoplasmsAdenomaMammary Neoplasms, ExperimentalBiopsy, NeedleAmpulla of VaterCommon Bile Duct NeoplasmsMutationIleal NeoplasmsCase-Control StudiesProspective StudiesGenes, rasNeoplasm MetastasisLymphatic MetastasisTissue Array AnalysisKeratin-20PancreaticoduodenectomyDNA, NeoplasmReproducibility of ResultsNeoplasm ProteinsJejunal NeoplasmsCarcinoembryonic AntigenEsophagusIncidenceCarcinoma, Non-Small-Cell LungKaplan-Meier EstimateCarcinoma, AdenosquamousCarcinoma, Acinar CellReverse Transcriptase Polymerase Chain ReactionUterine Cervical NeoplasmsCarcinoma in SituGastrointestinal NeoplasmsAntineoplastic AgentsNeoplasm TransplantationGastrectomyAntigens, NeoplasmParanasal Sinus NeoplasmsRNA, MessengerDiagnosis, Computer-AssistedPancreatectomyOvarian NeoplasmsMagnetic Resonance ImagingCombined Modality TherapyGene Expression ProfilingNursing DiagnosisGallbladder Neoplasms