AppendectomyAppendicitisAppendixLaparoscopyAppendiceal NeoplasmsMesenteric LymphadenitisCecal DiseasesSurgical Wound InfectionUmbilicusAbdomen, AcuteColectomyUnnecessary ProceduresPostoperative ComplicationsTonsillectomyColitis, UlcerativeLength of StayEmergenciesIntestinal PerforationTonsillitisAcute DiseaseDiagnostic ErrorsRetrospective StudiesAbdominal AbscessPain, PostoperativeAbdominal PainEmergency TreatmentTreatment OutcomeMucoceleTime-to-TreatmentNatural Orifice Endoscopic SurgeryEducation, Medical, GraduateCrohn DiseaseOperative TimeRupture, SpontaneousLaparotomyIntraoperative PeriodHematoceleProspective StudiesGeneral SurgeryAge of Onset