Abstract
The aims of this study were to (1) evaluate the diagnostic utility of a new tumor marker, TPS, with respect to TPA and CA 19-9 in patients with pancreatic cancer; (2) ascertain the reliability of the markers in predicting survival, and (3) evaluate the effect of liver dysfunction on the results. CA 19-9, TPA and TPS were measured in the serum of 19 control subjects, 42 patients with pancreatic cancer, 29 with chronic pancreatitis, and 52 with extrapancreatic diseases. CA 19-9 was confirmed to be the best serological indicator of pancreatic cancer, while TPA and TPS lacked both sensitivity and specificity. Pancreatic cancer patients with liver metastases had higher mean CA 19-9 and TPA, but not TPS, values than pancreatic cancer patients without metastases. A shorter survival time was associated with the presence of liver metastases and with higher serum tumor marker levels. CA 19-9, TPA and TPS were found to be correlated with liver function test results (ALT, ALP and bilirubin). (1) TPS adds no significant information to that obtained using CA 19-9 in the diagnosis of pancreatic cancer; (2) CA 19-9 and TPA, but not TPS, are influenced by the presence of liver metastases; (3) the main factor to influence survival is advanced disease, which is in turn associated with higher tumor marker levels, and (4) liver dysfunction can influence not only CA 19-9 and TPA, as already described, but also TPS.
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