EsophagusBarrett EsophagusAdenocarcinomaEsophageal NeoplasmsEsophagoscopyEsophageal DiseasesCardiaEsophagogastric JunctionMetaplasiaEsophagectomyEsophageal StenosisGastroesophageal RefluxPrecancerous ConditionsStomach NeoplasmsEsophagoplastyEsophagitisMucous MembraneAdenocarcinoma, MucinousLung NeoplasmsCarcinoma, Squamous CellEsophagitis, PepticPancreatic NeoplasmsImmunohistochemistryEsophageal PerforationPeristalsisAdenocarcinoma, PapillaryCarcinoma, Pancreatic DuctalManometryAdenocarcinoma, Bronchiolo-AlveolarEsophageal FistulaTumor Markers, BiologicalEndoscopy, GastrointestinalDimethylnitrosamineEndoscopy, Digestive SystemEsophageal Sphincter, LowerHernia, HiatalNeoplasm StagingDeglutitionBiopsyDeglutition DisordersHypopharynxStomachPrognosisEsophageal AchalasiaColonic NeoplasmsEsophagoscopesKeratin-7EndoscopyCausticsNeoplasms, Multiple PrimaryGene Expression Regulation, NeoplasticGastrointestinal NeoplasmsRetrospective StudiesFundoplicationDisease ProgressionDuodenogastric RefluxGastrectomyHydrochloric AcidCell Line, TumorIntestinal NeoplasmsEsophageal Sphincter, UpperEsophageal AtresiaTreatment OutcomeDilatationDiverticulum, EsophagealSurvival RateDigestive System NeoplasmsForeign BodiesBurns, ChemicalCase-Control StudiesRisk FactorsLymphatic MetastasisGastric MucosaNitrosaminesNeoplasm InvasivenessFatal OutcomeUpper Gastrointestinal TractKeratin-20Mucin-2Immunoenzyme TechniquesEosinophilic EsophagitisEndometrial NeoplasmsCell Transformation, NeoplasticDNA, NeoplasmTomography, X-Ray ComputedTracheoesophageal FistulaEsophageal Motility DisordersGastroscopyTumor Cells, CulturedCombined Modality TherapyBile RefluxTime FactorsEpitheliumSurvival AnalysisCarcinogensCineradiographyAnastomosis, SurgicalEsophageal pH MonitoringRNA, MessengerFollow-Up Studies