Appendiceal NeoplasmsAppendixCecal DiseasesMucoceleAppendectomyAppendicitisPseudomyxoma PeritoneiCystadenoma, MucinousPeritoneal NeoplasmsAdenocarcinoma, MucinousFecal ImpactionAdenoma, VillousIntestinal MucosaGastric MucosaMouth MucosaCecal NeoplasmsCarcinoid TumorDiverticulitisIntestinal PerforationHyperthermia, InducedAbdomen, AcuteChemotherapy, Cancer, Regional PerfusionAbdominal AbscessIntussusceptionNasal MucosaIntestinal ObstructionRupture, SpontaneousAbscessColonoscopyNucleosome Assembly Protein 1Ileal NeoplasmsCarcinoma, Signet Ring CellInfusions, ParenteralAbdominal PainColectomyChromograninsLaparoscopyTomography, X-Ray ComputedDiverticulumChromogranin AMitomycinMucous MembraneNeoplasms, Multiple PrimaryMucinsAdenocarcinomaImmunohistochemistryRetrospective Studies