DiverticulitisDiverticulitis, ColonicLead RadioisotopesPeritonitisPeritoneal NeoplasmsPeritoneal DiseasesColon, SigmoidSigmoid DiseasesIntestinal PerforationDiverticulum, ColonDiverticulosis, ColonicDiverticulumColectomyColonic DiseasesPeritonitis, TuberculousJejunal DiseasesColostomyPeritoneal Dialysis, Continuous AmbulatoryPeritoneal DialysisUrinary Bladder FistulaBarium SulfatePeritoneal LavageAppendicitisEnemaPneumoperitoneumAnastomosis, SurgicalIntestinal FistulaDigestive System Surgical ProceduresLaparoscopyAppendixTomography, X-Ray ComputedIntestinal ObstructionSurgical Procedures, ElectiveAbdomen, AcuteWatchful WaitingCecal DiseasesAbdominal PainMeckel DiverticulumLaparotomyPeritoneumRetrospective StudiesAcute DiseaseColonoscopyAnti-Bacterial AgentsCatheters, IndwellingAbdominal AbscessRecurrenceTreatment OutcomeGastrointestinal HemorrhageColonAscitic FluidAbscessTherapeutic IrrigationAnastomotic LeakDialysis SolutionsForeign-Body ReactionPostoperative ComplicationsFistulaTime Factors