Esophagogastric JunctionEsophageal NeoplasmsGastroesophageal RefluxManometryStomach NeoplasmsCardiaEsophagectomyEarly Termination of Clinical TrialsAdenocarcinomaGap JunctionsIntubation, GastrointestinalIntercellular JunctionsTight JunctionsEpirubicinMetaplasiaDeglutition DisordersGastrectomyEsophagusBarrett EsophagusAdherens JunctionsFluorouracilNeuromuscular Junction