StomachEsophagusBarrett EsophagusEsophageal NeoplasmsEsophagoscopyStomach NeoplasmsEsophageal DiseasesEsophageal StenosisGastroesophageal RefluxCardiaStomach DiseasesEsophagitisEsophagogastric JunctionGastric MucosaMetaplasiaEsophagitis, PepticEsophageal PerforationDeglutition DisordersAdenocarcinomaPeristalsisManometryHernia, HiatalMucous MembraneStomach UlcerEructationPrecancerous ConditionsDilatationHematemesisEsophageal AchalasiaHydrochloric AcidForeign BodiesGastric AcidPyloric AntrumDeglutitionBile RefluxStomach, RuminantEsophageal Motility DisordersDigestive SystemGastroscopyEsophagoscopesHeartburnVagus NerveGastric FundusEsophageal FistulaIntubationBarium SulfateCarcinoma, Squamous CellAntacidsEsophagoplastyEndoscopy, GastrointestinalDiverticulum, EsophagealHelicobacter pyloriCausticsEndoscopyEsophagectomyOmeprazoleGastrointestinal MotilityGastritisBiopsyMuscle, SmoothHelicobacter InfectionsProton Pump InhibitorsAnti-Ulcer AgentsGastric JuiceHydrogen-Ion ConcentrationDuodenumEndoscopy, Digestive SystemDigestive System NeoplasmsPressureStomach RuptureEsophageal Spasm, DiffuseUpper Gastrointestinal TractPharyngeal NeoplasmsPolyphloretin PhosphateGastrointestinal NeoplasmsDuodenogastric RefluxIndigo CarmineKeratoderma, Palmoplantar, DiffuseEsophagostomyTime FactorsStomach VolvulusEpitheliumMethysergideBurns, ChemicalAminolevulinic AcidReticulumBiperidenPhotochemotherapyGastrectomyMuscle ContractionNeoplasmsRupture, SpontaneousUlcerHiccupTracheoesophageal FistulaImmunohistochemistryAlkaliesProspective StudiesOpossumsAlcian Blue