Adenocarcinoma, MucinousAdenocarcinomaAppendiceal NeoplasmsRectumCarcinoma, Signet Ring CellPseudomyxoma PeritoneiRectal FistulaCecal NeoplasmsCystadenoma, MucinousUrachal CystCalymmatobacteriumPerineumCystadenocarcinoma, MucinousMucin-2Rectal NeoplasmsColorectal NeoplasmsMucinsStomach NeoplasmsNeoplasm StagingOvarian NeoplasmsColonic NeoplasmsImmunohistochemistryTumor Markers, BiologicalPrognosisMicrosatellite InstabilityHistologyLung NeoplasmsKaplan-Meier EstimateEsophageal NeoplasmsPancreatic NeoplasmsAdenocarcinoma, PapillaryBarrett EsophagusRectal DiseasesCarcinoma, Pancreatic DuctalAdenocarcinoma, Bronchiolo-Alveolar