endoscopic retrograde cholangiopancreatography ( ercp ) is essential in the diagnosis of pancreatic disease , jaundice and in post-cholecystectomy syndromes , as well as in cases where cholecystography and i.v . cholangiography fail to explain disturbances that strongly suggest bile duct involvement .
C0008310
endoscopic retrograde cholangiopancreatography
C0005400
bile duct