ColectomyCecal NeoplasmsAppendiceal NeoplasmsColonic DiseasesLaparoscopyColonic NeoplasmsColon, AscendingIntussusceptionColon, SigmoidCecal DiseasesIleal DiseasesColonoscopyIntestinal ObstructionAppendectomyLipomaColitis, UlcerativeLaparotomyAppendixIleal NeoplasmsPostoperative ComplicationsProctocolectomy, RestorativeIleostomyAdenocarcinomaGastrointestinal HemorrhageCecumNeoplasms, Multiple PrimaryColonTreatment OutcomeRectumRetrospective StudiesDiverticulitis, ColonicAdenomatous Polyposis ColiTomography, X-Ray ComputedColonic PouchesSigmoid DiseasesMegacolon, ToxicFollow-Up StudiesAnastomosis, SurgicalIleumPouchitisColon, TransverseMegacolonGastrointestinal AgentsEmergency TreatmentEmergenciesDiverticulosis, ColonicIntestinal PolypsGardner SyndromeCrohn DiseaseRectal Diseases