[Our experience with regard to congenital anomalies of the bile passages (with presentation of 13 clinical cases)]

Thirteen cases of congenital anomalies of the bile passages are described, as observed in the Verona Surgical Clinic during the period 1970-75, out of a total of 908 operations on the biliary passages and hence with a frequency of about 1.6%. They consisted of one case each of agenesis of the gall-bladder, septal gall-bladder, clepsydra gall-bladder, Hartmann's sac, diverticulum of the gall-bladder, outlet of the right hepatic in gall-bladder, outlet of cystic duct in third duodenal portion, accessory cholecystobiliary ducts, three cases of outlet of cystic duct in right hepatic duct, and two cases of common choledocho-wirsunghian canal. After a brief description of the individual types of anomaly, the main data in the relevant literature are considered, with a review of the semeiological and therapeutic aspects of the most frequent anomalies.