EsophagectomyGastrointestinal NeoplasmsEsophagusEsophageal NeoplasmsBarrett EsophagusStomach NeoplasmsAdenocarcinomaEsophagoscopyThoracoscopyCarcinoma, Squamous CellPancreatic NeoplasmsEsophageal StenosisEsophageal DiseasesDigestive System NeoplasmsEsophagostomyColorectal NeoplasmsEsophagoplastyAnastomosis, SurgicalEsophagogastric JunctionColonic NeoplasmsUpper Gastrointestinal TractNeoplasm StagingTreatment OutcomeRetrospective StudiesEsophageal FistulaGastric FistulaCombined Modality TherapySurvival RatePrognosisPrecancerous ConditionsFluorouracilThoracotomyCongresses as TopicCarcinomaPostoperative ComplicationsAnastomotic LeakRectal NeoplasmsMetaplasiaCardiaNeoplasmsDihydrouracil Dehydrogenase (NADP)Esophageal AchalasiaFollow-Up StudiesAntineoplastic Combined Chemotherapy ProtocolsLymph Node ExcisionRisk FactorsAppetite StimulantsSurvival AnalysisGastroesophageal RefluxAntigens, Tumor-Associated, CarbohydrateProspective StudiesLyeTumor Markers, BiologicalGene Expression Regulation, NeoplasticStomachThoracoscopesNeoplasm MetastasisRationalizationLaparoscopyHernia, HiatalEarly Detection of CancerCell Line, TumorGastrostomyEnteral NutritionJejunostomyMucous MembraneAntineoplastic AgentsIranLung NeoplasmsMedical OncologyIntestinal NeoplasmsAsbestosCarcinoembryonic AntigenCachexiaChemotherapy, AdjuvantDuodenoscopesNeoplasm ProteinsSurgical StaplingEndoscopy, Digestive SystemGastrectomyEndoscopy, GastrointestinalIncidenceGenetic Predisposition to DiseaseHuman DevelopmentDisease ProgressionNeoplasm SeedingTracheoesophageal FistulaDeoxycytidineMice, NudeDiverticulum, EsophagealChylothoraxMutationPatient PositioningDeglutition DisordersTime FactorsThymidine PhosphorylaseDNA, NeoplasmFrameshift MutationDNA MethylationGastrins