Adenocarcinoma, MucinousMetaplasiaAdenocarcinomaAppendiceal NeoplasmsStomach NeoplasmsCarcinoma, Signet Ring CellPseudomyxoma PeritoneiRectal FistulaCecal NeoplasmsMucinsCystadenoma, MucinousUrachal CystCalymmatobacteriumGastric MucosaPerineumImmunohistochemistryPrecancerous ConditionsMucin-2Gastritis, AtrophicCystadenocarcinoma, MucinousGastritisTumor Markers, BiologicalNeoplasm StagingColorectal NeoplasmsSodium-Phosphate Cotransporter Proteins, Type IIbBarrett EsophagusPrognosisOvarian NeoplasmsHelicobacter pyloriHelicobacter InfectionsIntestinal NeoplasmsGastrectomyColonic NeoplasmsRectal NeoplasmsMicrosatellite InstabilityIntestinesCarcinomaEsophageal NeoplasmsCardiaLung NeoplasmsLymphatic MetastasisKaplan-Meier EstimatePancreatic NeoplasmsNeoplasm InvasivenessCarcinoma, Pancreatic DuctalAdenocarcinoma, PapillaryEsophagusRetrospective StudiesAdenocarcinoma, Bronchiolo-AlveolarEsophagogastric JunctionGoblet Cells