Adenocarcinoma, MucinousAdenocarcinomaAppendiceal NeoplasmsCarcinoma, Signet Ring CellPseudomyxoma PeritoneiRectal FistulaCecal NeoplasmsCystadenoma, MucinousUrachal CystCalymmatobacteriumPerineumCystadenocarcinoma, MucinousMucin-2Colonic NeoplasmsColorectal NeoplasmsMucinsStomach NeoplasmsNeoplasm StagingOvarian NeoplasmsTumor Markers, BiologicalImmunohistochemistryRectal NeoplasmsMicrosatellite InstabilityPrognosisKaplan-Meier EstimateLung NeoplasmsPancreatic NeoplasmsEsophageal NeoplasmsColon, DescendingAdenocarcinoma, PapillaryBarrett EsophagusCarcinoma, Pancreatic DuctalAdenocarcinoma, Bronchiolo-Alveolar