Feasibility and safety of bisegmentectomy 7-8 while preserving hepatic venous outflow of the right liver - A retrospective cohort study

International Journal of Surgery
Hye-Sung JoDong-Sik Kim

Abstract

When a hepatic tumor is deeply located in segments 7 and 8 around the right hepatic vein (RHV), right hemihepatectomy (RH) could be excessive owing to the resection of large tumor-free segments. This study aimed to evaluate the feasibility and safety of bisegmentectomy 7-8 (S7-8) and to compare its surgical outcomes with those of RH. Consecutive patients who underwent S7-8 and RH were enrolled in this study. In the S7-8 group, 14 patients with an obvious inferior right hepatic vein (IRHV) (median: 6 mm; range: 3.6-8.8 mm) underwent S7-8 without hepatic vein reconstruction. RHV reconstruction was performed in six patients without an IRHV, involving direct anastomosis of the RHV in five patients and reconstruction using a cryo-preserved iliac vein in one patient. A total of 61 patients were included (20 in S7-8 group; 41 in RH group). No significant differences were observed other than higher a model of end-stage liver disease score in the RH group than in the S7-8 group (7 [6-20] vs. 6 [6-9], P = 0.003). Post-hepatectomy liver failure including severe grades was more frequent in the RH group (43.9% vs. 10%, P = 0.008). In the S7-8 group, two patients with direct RHV reconstruction had RHV anastomosis obstruction, and eventually ...Continue Reading

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