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Diagnostic pitfall; interpretation of CA 19-9 concentrations in the presence of hepatic dysfunction.
  1. S Pearce,
  2. H Thornes,
  3. D Carr,
  4. A Tanner
  1. Department of Medicine, North Tees General Hospital, Stockton on Tees, Cleveland.


    A 50 year old man is described with hepatic dysfunction and chronic pancreatitis in whom greatly increased concentrations of the pancreatic tumour marker CA 19-9 combined with an abnormal appearance at endoscopic retrograde cholangiopancreatography lead to the false suspicion of pancreatic carcinoma. CA 19-9 concentrations should be interpreted with caution in patients with intrinsic liver disease or biliary obstruction.

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