EsophagusBarrett EsophagusEsophageal NeoplasmsEsophagoscopyMetaplasiaAdenocarcinomaPrecancerous ConditionsEsophagogastric JunctionEsophagectomyCardiaGastroesophageal RefluxEsophageal DiseasesMucous MembraneEsophageal StenosisHernia, HiatalEndoscopy, GastrointestinalGenes, MCCEsophagoplastyEsophagitisEndoscopyEsophagitis, PepticPharmacy AdministrationEsophageal PerforationPeristalsisManometryEsophageal FistulaBiopsyStomach NeoplasmsCarcinoma, Squamous CellDimethylnitrosamineEsophageal Sphincter, LowerImmunohistochemistryDeglutitionHypopharynxDisease ProgressionEsophageal AchalasiaDeglutition DisordersEndoscopy, Digestive SystemEsophagoscopesChromosomes, Human, Pair 17CausticsChromosomes, Human, Pair 5Tumor Markers, BiologicalStomachLoss of HeterozygosityFundoplicationEsophageal Sphincter, UpperEsophageal AtresiaHydrochloric AcidDilatationDiverticulum, EsophagealForeign BodiesRisk FactorsBurns, ChemicalPrognosisDuodenogastric RefluxEosinophilic EsophagitisUpper Gastrointestinal TractTracheoesophageal FistulaEsophageal Motility DisordersGene Expression Regulation, NeoplasticCineradiographyEsophageal pH MonitoringPolymerase Chain ReactionBile RefluxDigestive System NeoplasmsGastrointestinal NeoplasmsNumismaticsFistulaDigestive SystemAnastomosis, SurgicalNitrosaminesMediastinumRetrospective StudiesLaryngopharyngeal RefluxLarynxGastroscopyUlcerGastrectomyCarcinoma, BasosquamousCase-Control StudiesDuodenumTreatment OutcomeGastric MucosaEsophageal Spasm, DiffuseDiagnostic Techniques, Digestive SystemCatheter AblationEpitheliumHeartburnEsophagostomy