Cholecystitis, AcuteCholecystitisAcalculous CholecystitisGallbladderCholecystostomyCholecystectomyCholecystectomy, LaparoscopicImino AcidsTokyoTechnetium Tc 99m DisofeninCholecystographyEmphysematous CholecystitisGallbladder DiseasesCholelithiasisCholecystolithiasisGallstonesAcute DiseaseGangreneGallbladder NeoplasmsConversion to Open SurgeryCholangitisTechnetium Tc 99m LidofeninBiliary Tract DiseasesCystic DuctOrganotechnetium CompoundsHemobiliaXanthomatosisCholangiopancreatography, Magnetic ResonanceCholangiopancreatography, Endoscopic RetrogradeCholedocholithiasisDrainageEndoscopy, Digestive SystemRetrospective StudiesCholangiographyRupture, SpontaneousLength of StayPostoperative ComplicationsCommon Bile DuctTreatment OutcomeTechnetiumAbdomen, AcuteAbdominal PainPancreatitisBile DuctsFalse Positive ReactionsIntraoperative ComplicationsEmergency TreatmentEmergenciesTime FactorsBiliary TractFalse Negative ReactionsTomography, X-Ray ComputedSphincterotomy, Endoscopic