Current surgical treatment for bile duct cancer

Figure 6 Indications for left trisectoriectomy according to tumor location and the bile duct variations in the anatomy of the right lateral branch of the bile duct. Double lines indicate the scheduled cut end of the bile duct. Type A, ordinary bifurcation; extended right hepatectomy is the choice of treatment. Type B, the right lateral branch originates from the common hepatic duct; left trisectoriectomy, preserving the right lateral branch, is a useful alternative in Types B1 and B2. Type C, the right lateral branch originates from the left hepatic duct; left trisectoriectomy may provide a longer bile duct margin.