[The valve of selective retrograde cholangiography in the radiological diagnosis of diseases of the biliary passages(author's transl)].

The value of selective endoscopic retrograde cholangiography in the radiological diagnosis of diseases of the biliary passages and neighbouring organs is discussed on the basis of 400 retrograde pancreatocholangiograms. The results of this endoscopic examination were compared with the findings of all the other preoperative examinations carried out. The diagnostic usefulness and limitations of various methods are discussed in relation to stenosis of the papilla, pancreatitis, carcinoma of the pancreas, tumours of the extrahepatic bile ducts and postoperative bile duct abnormalities. The diagnostic accuracy of 97% emphasises the value of co-operation between radiologists and endoscopists.