Adenocarcinoma, MucinousAdenocarcinomaAppendiceal NeoplasmsCarcinoma, Signet Ring CellPseudomyxoma PeritoneiRectal FistulaRectumCecal NeoplasmsCystadenoma, MucinousUrachal CystCalymmatobacteriumPerineumCystadenocarcinoma, MucinousMucin-2Colorectal NeoplasmsMucinsColonic NeoplasmsStomach NeoplasmsNeoplasm StagingRectal NeoplasmsOvarian NeoplasmsImmunohistochemistryTumor Markers, BiologicalMicrosatellite InstabilityPrognosisKaplan-Meier EstimateLung NeoplasmsEsophageal NeoplasmsPancreatic NeoplasmsAdenocarcinoma, PapillaryBarrett EsophagusCarcinoma, Pancreatic DuctalAdenocarcinoma, Bronchiolo-Alveolar