[Deep duodenoscopy and ERCP].

The deep duodenoscopy serves for the endoscopico-bioptic clarification of radiologically unclear findings distally from the bulb (niches, sockets, stenoses) and of the positional relations between diverticulum and papilla. As a rule, it is connected with an endoscopic retrograde cholangiopancreaticography (ERCP). The endoscopic retrograde pancreaticography is indicated in relapsing chronic pancreatitis for proving or excluding of changes needing operation which are taken into consideration as partial factors of the relapsing course as well as in suspicion to a local pancreatitis complication and carcinoma of the pancreas. The endoscopic retrograde cholangiography is a decisive aid for the differentiation of the cholostatic icterus. It improves the diagnostics of complaints after operative interventions at the system of the biliary ducts, facilitates the diagnosis of the papillary stenosis and is indicated in insufficient conventional contrasting the biliary ducts. The complications (pancreatitis, cholangitis, cystic infection) have become rare with increasing experience. Contraindications are the florid pancreatitis and cholangitis.