Biliary Tract NeoplasmsCholestasis, ExtrahepaticBiliary Tract DiseasesCholestasisBiliary TractJaundice, ObstructiveBiliary Tract Surgical ProceduresCholangitisCholedochostomyCommon Bile DuctCholangiopancreatography, Endoscopic RetrogradeBile Duct NeoplasmsIntestinal ObstructionAirway ObstructionDrainageGallbladder NeoplasmsHepatic Duct, CommonBile Ducts, ExtrahepaticCholangiocarcinomaGallstonesJaundiceCholangiographyBile DuctsUreteral ObstructionCholelithiasisCommon Bile Duct DiseasesBile Ducts, IntrahepaticAmpulla of VaterCholestasis, IntrahepaticBilePalliative CareGallbladderImino AcidsCholecystectomyCholecystitisPlasticsTechnetium Tc 99m LidofeninBiliary FistulaBilirubinCommon Bile Duct NeoplasmsDigestive System NeoplasmsStentsKlatskin's TumorBiliary AtresiaBile Duct DiseasesCholangiopancreatography, Magnetic ResonancePancreatitisLiver DiseasesPancreatic NeoplasmsDuodenal ObstructionSphincterotomy, TranshepaticConstriction, PathologicLiverHemobiliaUrethral ObstructionUrinary Bladder Neck ObstructionSphincterotomy, EndoscopicDuodenoscopyNasal ObstructionLigationAnastomosis, Roux-en-YGastric Outlet ObstructionAdenoma, Bile DuctTreatment OutcomeLiver Function TestsPostoperative ComplicationsVentricular Outflow ObstructionRetrospective StudiesDuodenumEndoscopyMetalsLiver NeoplasmsBile Acids and SaltsAnastomosis, SurgicalPortal VeinLacrimal Duct ObstructionGallbladder DiseasesGlycocholic AcidAcute DiseaseLiver TransplantationTomography, X-Ray ComputedHepatitisEndosonographyTime FactorsCholedochal CystDeoxycytidineJejunostomyUrinary Tract InfectionsCatheterizationFollow-Up StudiesAlkaline PhosphataseCA-19-9 AntigenPancreatic DiseasesAdenocarcinomaUrinary TractCystic DuctMammaglobin BTechnetiumGastrointestinal TractLiver Cirrhosis, Biliary