DiverticulitisDiverticulitis, ColonicColon, SigmoidSigmoid DiseasesDiverticulum, ColonIntestinal PerforationDiverticulosis, ColonicDiverticulumColectomyColonic DiseasesPostoperative ComplicationsJejunal DiseasesColostomyUrinary Bladder FistulaBarium SulfateAppendicitisEnemaDigestive System Surgical ProceduresIntestinal FistulaAnastomosis, SurgicalSurgical Procedures, ElectiveLaparoscopyAppendixPeritonitisWatchful WaitingRetrospective StudiesTreatment OutcomeTomography, X-Ray ComputedPneumoperitoneumIntestinal ObstructionMeckel DiverticulumPeritoneal LavageCecal DiseasesAbdominal PainAbdomen, AcuteColonoscopyAcute DiseaseGastrointestinal HemorrhageRecurrenceAnastomotic LeakFistulaAbdominal AbscessLaparotomyTherapeutic IrrigationColonAbscessFollow-Up StudiesForeign-Body ReactionIntraoperative ComplicationsHeart-Lung Transplantation