AppendicitisAppendectomyAppendixAbdomen, AcuteIntestinal PerforationAbdominal AbscessAbdominal PainFecal ImpactionAcute DiseaseCecal DiseasesRupture, SpontaneousGangreneLaparoscopyAppendiceal NeoplasmsDiagnostic ErrorsMesenteric LymphadenitisDiverticulitisHernia, FemoralRadiography, AbdominalRetrospective StudiesTorsion AbnormalityTomography, X-Ray ComputedCecal NeoplasmsAbscessLaparotomyLithiasis