Endoscopic Retrograde Cholangiopancreatography and Transhepatic Cholangiography in Patients with Suspected Obstructive Jaundice

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Abstract
To establish principles for choosing between endoscopic retrograde and percutaneous transhepatic cholangiography, we randomized 52 consecutive jaundiced patients with clinically suspected obstructive jaundice. The bile ducts were visualized in 85% by the endoscopic and in 84% by the transhepatic route. A conclusive diagnosis was reached in 89% and 68% of the patients, respectively, but the difference is not significant (0.10 < P < 0.2(1). If the planned type of cholangiography failed, the other method was tried. By comparing the total numbers of investigations, a conclusive diagnosis was achieved in 91% by endoscopic and 69% by transhepatic route, which is significantly different (P < 0.05). We therefore prefer to do endoscopic cholangiography initially with transhepatic cholangiography as the complementary method.