Adenocarcinoma, MucinousAdenocarcinomaAppendiceal NeoplasmsCarcinoma, Signet Ring CellPseudomyxoma PeritoneiRectal FistulaEpitheliumCecal NeoplasmsCystadenoma, MucinousUrachal CystCalymmatobacteriumPerineumCystadenocarcinoma, MucinousMucin-2MucinsColorectal NeoplasmsImmunohistochemistryStomach NeoplasmsOvarian NeoplasmsNeoplasm StagingTumor Markers, BiologicalBarrett EsophagusColonic NeoplasmsRectal NeoplasmsMicrosatellite InstabilityPrognosisEsophageal NeoplasmsMetaplasiaLung NeoplasmsKaplan-Meier EstimateEsophagusEpithelial CellsPancreatic NeoplasmsCardiaAdenocarcinoma, PapillaryCarcinoma, Pancreatic DuctalAdenocarcinoma, Bronchiolo-AlveolarEpithelium, CornealPrecancerous Conditions