Ann Hepatobiliary Pancreat Surg.  2021 Feb;25(1):8-17. 10.14701/ahbps.2021.25.1.8.

Robotic major liver resections: Surgical outcomes compared with open major liver resections

Affiliations
  • 1Division of Hepatobiliary and Pancreas, Department of Surgery, Yonsei University College of Medicine, Seoul, Korea

Abstract

Backgrounds/Aims
Laparoscopic major liver resections are still considered innovative procedures despite the recent development of laparoscopic liver surgery. Robotic surgery has been introduced as an innovative system for laparoscopic surgery. In this study, we investigated surgical outcomes after major liver resections using robotic systems.
Methods
From January 2009 to October 2018, 70 patients underwent robotic major liver resections, which included conventional major liver resections and right sectionectomy. The short-term and long-term outcomes were compared with 252 open major resections performed during the same period.
Results
Operative time was longer in the robotic group (472 min vs. 349 min, p<0.001). However, estimated blood loss was lower in the robotic group compared with the open resection group (269 ml vs. 548 ml,p=0.009). The overall postoperative complication rate of the robotic group was lower than that of the open resection group (31.4% vs. 58.3%, p<0.001), but the major complication rate was similar between the two groups. Hospital stay was shorter in the robotic group (9.5 days vs. 15.1 days, p=0.006). Among patients with HCC, cholangiocarcinoma, and colorectal liver metastasis, there was no difference in overall and disease-free survival between the two groups. After propensity score matching in 37 patients with HCC for each group, the robotic group still showed a shorter hospital stay and comparable long-term outcomes.
Conclusions
Robotic major liver resections provided improved perioperative outcomes and comparable long-term oncologic outcome compared with open resections. Therefore, robotic surgery should be considered one of the options for minimally invasive major liver resections.

Keyword

Robotic hepatectomy; Open hepatectomy; Major liver resection; Surgical outcomes

Figure

  • Fig. 1 Survival analysis between open and robot resection groups regarding hepatocellular carcinoma. (A) Overall survival analysis in patients with hepatocellular carcinoma (p=0.22, the 1-, 3- and 5-year survival rate of robotic case: 100%, 93% and 93%/open case: 93%, 85% and 81%). (B) Disease-free survival analysis in patients with Hepatocellular carcinoma (p=0.16, the 1-, 3- and 5-year survival rate of robotic case: 100%, 93% and 93%/open case: 88%, 82% and 82%).

  • Fig. 2 Survival analysis between open and robot resection group regarding liver metastasis. (A) Overall survival analysis in patients with liver metastasis (p=0.73, the 1-, 3- and 5-year survival rate of robotic case: 87%, 87% and 87%/open case: 96%, 80% and 80%). (B) Disease-free survival analysis in patients with liver metastasis (p=0.57, the 1-, 3- and 5-year survival rate of robotic case: 85%, 85% and 85%/open caser: 89%, 74% and none in 5 year).

  • Fig. 3 Survival analysis between open and robot resection groups regarding cholangiocellular carcinoma. (A) Overall survival analysis in patients with Cholangiocellular carcinoma (p=0.38 the 1-, 3- and 5-year survival rate of robotic case: 100%, 100% and 100%/open case: 86%, 70% and 62%). (B) Disease-free survival analysis in patients with Cholangiocellular carcinoma (p=0.49 the 1-, 3- and 5-year survival rate of robotic case: 100%, 100% and 75%/open case: 74%, 70% and 56%).

  • Fig. 4 Survival analysis between open and robot resection groups regarding hepatocellular carcinoma after propensity score matching. (A) Overall survival analysis in patients with hepatocellular carcinoma after PSM (p=0.59, the 1-, 3- and 5-year survival rate of robotic case: 97%, 90% and 90%/open case: 94%, 84% and 76%). (B) Disease-free survival analysis in patients with Hepatocellular carcinoma after PSM (p=0.58, the 1-, 3- and 5-year survival rate of robotic case: 97%, 90% and 90%/open case: 88%, 82% and 82%).


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