Major hepatectomy using the glissonean approach in cases of right umbilical portion

Figure 1 Case 1 enhanced computed tomography. A: Computed tomography shows the left-sided gallbladder and RUP; B: The right anterior and medial segmental portal branches ramify from the RUP after its trifurcation as well as the right posterior and left lateral branch; C: A 25-mm sized tumour peripherally enhanced in the arterial phase was detected in segment 8; D: Diagram of the intrahepatic portal vein branching and the location of the tumour. A: Right anterior portal vein; P: Right posterior portal vein; G: Gallbladder; M: Left medial portal vein; RUP: Right umbilical portion; L: Left lateral portal vein; T: Tumour; RL: Round ligament.