title: Computerized tomography, echo, before percutaneous transhepatic cholangiography, endoscopic retrograde cholangiography.
mesh_terms: D002758:Cholangiography / Q000379:methods; D002779:Cholestasis / Q000175:diagnosis*; D006801:Humans; D014057:Tomography, X-Ray Computed; D014463:Ultrasonography