[Intraoperative bile duct diagnosis].

Modern intra-operative diagnostic procedures for diseases of the gallbladder and the choledochus are divided into two groups. Before choledochotomy the following are carried out: inspection, palpation, intra-operative cholangiography via the cysticus, and the measurement of residual pressure. After choledochotomy, further diagnostic procedures are: examination of the choledochus and liver, intra-operative cholangiography of opened choledochus by various methods and intra-operative endoscopy of the biliary duct.