Objective. To investigate the anatomical features of the formation of the hepatic lobar ducts (HLD) to perform biliary drainage in this region in patients with severe obstructive jaundice. Materials and methods. The investigations were conducted on 150 human corpse organ complexes (liver, hepatoduodenal ligament, inferior vena cava, and small bowel); X-ray vasocholangiography was used; topographic anatomical and corrosion preparations were prepared. Results. In 123 (82%) cases, the left HLD was formed by the confluence of the bile duct (BD) of the left lateral sector and that of segment IV. In these preparations, the BD of the left lateral sector was formed through the confluence of the hepatic BD in segments II and III. Segment IV is essentially a BD of the left paramedian sector. In 24 (16%) cases, the left HLD was formed via the confluence of the BD of Segment II and the duct of the left paramedian sector. In these cases, the BD of the left paramedian sector was formed by the confluence of the ducts in segments III and IV and the BD of the left lateral sector was absent. In 3 (2%) cases, the left HLD was formed through the confluence of the BD in segment III and that of the left paramedian sector. In these preparations, the BD of the left paramedian sector atypically occurred via the confluence of BDs in segments II and IV. The variants of BD confluence in the segments are of great practical importance as they affect the length of the left HLD and the number of BD branches in the left Glisson pedicle. There may be 1 and 3 BDs in this pedicle, in its outer half. The Glisson pedicle of the left portal lobe was found to have one BD in 84 (56%) cases, two BDs in 48 (32%) and three BDs in 18 (12%). Our investigations showed that in typical cases, the right hepatic duct (RHD) was formed by the confluence of two BDs in the sectors of the right portal lobe of the liver (right lateral and paramedian sectors). This version of RHD formation was seen in our preparations in 93 (62%) cases. In 18 (12%) cases, the RHD was formed by the confluence of the BD of the right lateral sector, as well as segments V and VIII of the liver. The RHD emerged through the confluence of the BD of the right paramedian sector and hepatic segment VII much less frequently in 9 (6%) cases. It should be noted that the RHD was absent in 21 (14%) cases. The BD of the lateral right sector and that of segment VIII of the liver were involved in RHD formation in 6 (4%) cases. The RHD is formed by the convergence of the BD of the right lateral sector and that of segment V very rarely in 3 (2%) cases.