Adenocarcinoma, MucinousAppendiceal NeoplasmsCystadenoma, MucinousAdenocarcinomaPseudomyxoma PeritoneiCarcinoma, Signet Ring CellCystadenocarcinoma, MucinousRectal FistulaOvarian NeoplasmsMucinsCecal NeoplasmsMucin-2Urachal CystCalymmatobacteriumCarcinoma, Pancreatic DuctalPerineumTumor Markers, BiologicalPancreatic NeoplasmsCystadenocarcinomaCystadenomaColorectal NeoplasmsImmunohistochemistryCystadenoma, PapillaryStomach NeoplasmsNeoplasm StagingKeratin-7Colonic NeoplasmsPeriodic Acid-Schiff ReactionRectal NeoplasmsCystadenoma, SerousMicrosatellite InstabilityPrognosisKeratin-20Cholangiopancreatography, Endoscopic RetrogradePeritoneal NeoplasmsPancreatic PseudocystCystadenocarcinoma, SerousCarcinoma, EndometrioidPancreatic DuctsCell Line, TumorNeoplasms, Unknown PrimaryCarcinoma, PapillaryKaplan-Meier EstimateLung NeoplasmsEsophageal NeoplasmsGallbladder NeoplasmsTumor BurdenTumor Necrosis Factor-alphaAdenocarcinoma, PapillaryBarrett EsophagusAdenocarcinoma, Bronchiolo-AlveolarNeoplasms, ExperimentalRetrospective Studies