Barrett EsophagusEsophagusAdenocarcinomaEsophageal NeoplasmsMetaplasiaPrecancerous ConditionsGenes, MCCCardiaGastroesophageal RefluxEndoscopy, GastrointestinalEsophagoscopyImmunohistochemistryDisease ProgressionEsophagogastric JunctionEsophagectomyMucous MembraneStomach NeoplasmsHernia, HiatalAdenocarcinoma, MucinousLung NeoplasmsEsophageal DiseasesPancreatic NeoplasmsTumor Markers, BiologicalPharmacy AdministrationAdenocarcinoma, PapillaryCarcinoma, Pancreatic DuctalAdenocarcinoma, Bronchiolo-AlveolarEsophageal StenosisEndoscopyBiopsyCarcinoma, Squamous CellPrognosisGene Expression Regulation, Neoplastic