AppendicitisAppendectomyAppendixAbdomen, AcuteIntestinal PerforationAbdominal PainAbdominal AbscessFecal ImpactionAcute DiseaseCecal DiseasesRupture, SpontaneousGangreneLaparoscopyAppendiceal NeoplasmsDiagnostic ErrorsMesenteric LymphadenitisDiverticulitisRetrospective StudiesHernia, FemoralRadiography, AbdominalTorsion AbnormalityTomography, X-Ray ComputedCecal NeoplasmsAbscessLaparotomyChild WelfareLithiasis