EsophagusBarrett EsophagusMetaplasiaEsophagoscopyAdenocarcinomaPrecancerous ConditionsEsophageal NeoplasmsCardiaEsophagogastric JunctionGastroesophageal RefluxEsophagectomyGenes, MCCMucous MembraneHernia, HiatalEndoscopy, GastrointestinalEsophageal DiseasesPharmacy AdministrationEsophageal StenosisEndoscopyEsophagoplastyBiopsyEsophagitisChromosomes, Human, Pair 5Chromosomes, Human, Pair 17Stomach NeoplasmsImmunohistochemistryEsophagitis, PepticDisease ProgressionEsophageal PerforationPeristalsisLoss of HeterozygosityManometryTumor Markers, BiologicalEsophageal FistulaCarcinoma, Squamous CellDimethylnitrosamineEsophageal Sphincter, LowerDeglutitionHypopharynxEsophageal AchalasiaDeglutition DisordersEndoscopy, Digestive SystemPrognosisEsophagoscopesRisk FactorsCausticsGene Expression Regulation, NeoplasticPolymerase Chain ReactionStomachFundoplicationEsophageal Sphincter, UpperEsophageal AtresiaHydrochloric AcidDilatationDiverticulum, EsophagealForeign BodiesBurns, ChemicalDuodenogastric RefluxEosinophilic EsophagitisUpper Gastrointestinal TractTracheoesophageal FistulaEsophageal Motility DisordersCineradiographyEsophageal pH MonitoringBile RefluxDigestive System NeoplasmsGastrointestinal NeoplasmsNumismaticsFistulaDigestive SystemAnastomosis, SurgicalNitrosaminesMediastinumRetrospective StudiesLaryngopharyngeal RefluxLarynxGastroscopyUlcerGastrectomyCarcinoma, BasosquamousCase-Control StudiesDuodenum