title: Endoscopic retrograde cholangiopancreatography and biliary obstruction.
mesh_terms: D002758:Cholangiography / Q000379:methods*; D002779:Cholestasis / Q000000981:diagnostic imaging / Q000209:etiology; D001651:Cholestasis, Extrahepatic / Q000000981:diagnostic imaging* / Q000209:etiology; D003135:Common Bile Duct / Q000000981:diagnostic imaging*; D003937:Diagnosis, Differential; D004724:Endoscopy; D006801:Humans; D010179:Pancreas / Q000000981:diagnostic imaging*