Adenocarcinoma, MucinousAppendiceal NeoplasmsAdenocarcinomaCystadenoma, MucinousPseudomyxoma PeritoneiCarcinoma, Signet Ring CellRectal FistulaCystadenocarcinoma, MucinousCecal NeoplasmsUrachal CystMucin-2CalymmatobacteriumMucinsOvarian NeoplasmsPerineumColorectal NeoplasmsTumor Markers, BiologicalStomach NeoplasmsImmunohistochemistryNeoplasm StagingCarcinoma, Pancreatic DuctalPancreatic NeoplasmsColonic NeoplasmsRectal NeoplasmsMicrosatellite InstabilityCystadenocarcinomaPrognosisCystadenomaKeratin-7Cystadenoma, PapillaryKaplan-Meier EstimateLung NeoplasmsEsophageal NeoplasmsPeriodic Acid-Schiff ReactionKeratin-20Adenocarcinoma, PapillaryCystadenoma, SerousBarrett EsophagusAdenocarcinoma, Bronchiolo-AlveolarCell Line, TumorCarcinoma, EndometrioidPeritoneal NeoplasmsCholangiopancreatography, Endoscopic RetrogradeCystadenocarcinoma, SerousPancreatic PseudocystPancreatic Ducts