AppendicitisAppendectomyAppendixAbdomen, AcuteIntestinal PerforationAbdominal AbscessAbdominal PainFecal ImpactionAcute DiseaseCecal DiseasesRupture, SpontaneousGangreneLaparoscopyAppendiceal NeoplasmsDiagnostic ErrorsMesenteric LymphadenitisDiverticulitisHernia, FemoralRadiography, AbdominalRetrospective StudiesTomography, X-Ray ComputedTorsion AbnormalityCecal NeoplasmsAbscessLaparotomyLithiasisEncyclopedias as Topic