Short- and long-term outcomes following robotic and open resection for intrahepatic cholangiocarcinoma: A national cohort study.

Background: Curative-intent liver resection with porta hepatis lymphadenectomy provides the best chance for long-term survival for patients with intrahepatic cholangiocarcinoma (ICC). While the robotic approach has been increasingly utilized, its impact on perioperative and long-term outcomes of patients with ICC are largely unknown.

Methods: Patients with stages I-III ICC who underwent surgical resection between 2004 and 2017 were identified from the National Cancer Database. Descriptive statistics and multivariate models were constructed to examine the association between surgical approach and surgical and oncological outcomes.

Results: A total of 1876 patients with ICC who underwent open (n = 1804, 96.2%) and robotic-assisted (n = 72, 3.8%) resection were identified. Following surgery, patients who underwent a robotic-assisted resection had a shorter length of hospital stay yet there was no difference in 30-day readmission or 90-day mortality. Older age, disease stage, and higher comorbidity were associated with worse OS. Patients undergoing robotic-assisted surgery had no difference in long-term risk of death compared with patients who underwent an open procedure.

Conclusion: This national cohort study demonstrated that the robotic approach for patients undergoing resection for ICC resulted in a shorter hospitalization while not compromising oncological outcomes such as negative margins, postoperative mortality, and long-term survival.