[Echography and percutaneous transhepatic cholangiography in the evaluation of obstructive lesions of the bile ducts].

Among diagnostic techniques proposed for the study of obstructive jaundice, the initial use of echotomography clearly distinguishes between medical and surgical forms. If surgery is not indicated, further diagnostic investigations, (transhepatic percutaneous cholangiography followed if necessary by drainage of the bile duct) are conducted. Used in conjunction, echography and TPC will solve clinical doubts in most cases.