Biliary Tract Surgical ProceduresBiliary Tract NeoplasmsBiliary Tract DiseasesBiliary TractGallbladder NeoplasmsCholangiocarcinomaSurgical Procedures, OperativeBile Duct NeoplasmsGallstonesBile Ducts, ExtrahepaticCholelithiasisCholecystectomyBile Ducts, IntrahepaticCholangitisGallbladderTreatment OutcomeTumor Markers, BiologicalAmpulla of VaterBile DuctsRetrospective StudiesPostoperative ComplicationsCommon Bile DuctCholedochostomyCell Line, TumorBileTumor BurdenTumor Necrosis Factor-alphaTime FactorsCholecystitisCholestasisCholangiopancreatography, Endoscopic RetrogradeCholangiographyBiliary FistulaAdenocarcinomaSurgical Procedures, MinorBile Duct DiseasesDrainageDeoxycytidineLiver NeoplasmsWilms Tumor