Abstract: Objective To evaluate the value of MRCP combined with CA19-9 in diagnosis of surgical obstructive jaundice.Methods The clinical data of 94 patients with surgical obstructive jaundice were analyzed.Results The correct diagnostic rates of each patient in finding causes of obstructive jaundice,CA19-9 were 76.3% and 30.4%,MRCP 83.8% and 91.1%,CA19-9 combined with MRCP were 94.7% and 82.9%.Conclusion MRCP and CA19-9 have their own advantages and disadvantages in diagnosing surgical obstructive jaundice.The combination can significant raise the accuracy of diagnosis.As complementary to each other,MRCP and CA19-9 together can provide reliable etiologic diagnosis for suspicious obstructive jaundice.

Key words: Magnetic resonance imaging, Cholangiopancreatography, CA19-9, Combined examination, Obstructive jaundice