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Relationship between left biliary duct system and left portal vein: evaluation with three-dimensional
Akihiro Cho1, Shinichi Okazumi, Youshin Yoshinaga
1Department of Academic Surgery, Graduate School of Medicine, Chiba University, 1-8-1 Inohana, Chuou-ku, Chiba 260-0856, Japan. cho@maple.ocn.ne.jp
Purpose:
To investigate the relationship between the left biliary duct system and the left portal vein by using in vivo analysis of the human liver with three-dimensional portocholangiography.
Materials And Methods:
Twenty-seven patients underwent helical computed tomography during both arterial portography and cholangiography. Three-dimensional portocholangiograms were reconstructed to evaluate the relationship between the left biliary duct system and the left portal vein, in particular the umbilical portion.
Results:
In 16 (59%) patients, segment II and III ducts united just above the umbilical portion or laterally to it, and the segment IV duct joined medially to the umbilical portion. In eight (30%) patients, segment III and IV ducts united medially to the umbilical portion and the segment II duct joined at a point close to the hepatic hilum. In three (11%) patients, three ducts from segments II-IV united at a position immediately medial to the umbilical portion.
Conclusion:
Three types of left bile duct anatomy were seen in relation to the left portal vein.