Impact of hepatic artery variation on surgical and oncological outcomes in robotic pancreaticoduodenectomy.

Background: In patients with hepatic artery variation (HAV), feasibility and justification of robotic pancreatoduodenectomy (RPD) for periampullary lesions have been not been well established. Methods: A total of 600 patients with periampullary lesions receiving RPD or open pancreaticoduodenectomy (OPD) were identified from our prospectively collected computer database. Surgical outcomes, oncological radicality, and survival outcomes after RPD in HAV (+) and (−) patients were compared. Results: The incidence of HAV was 16%, including 12.7% in patients with RPD and 23.0% in those with OPD. In the HAV (+) group, vascular injury rate had no statistical difference between the RPD (3.7%) and OPD (9.1%) patients, P = 0.404. Among the RPD patients, those with HAV (+) had longer operation time (8.5 ± 2.5 vs. 7.7 ± 2.0 h, P = 0.013) and higher vascular injury (3.8% vs. 0.6%, P = 0.024) when compared with the HAV (−) patients. There was no significant difference between the HAV (+) and (−) patients with RPD regarding blood loss, open conversion, vascular resection, and surgical mortality and morbidity. There was no survival difference between the HAV (+) and (−) patients with pancreatic head adenocarcinoma after RPD. There was no survival difference between RPD and OPD in the HAV (+) group. Conclusions: When compared with OPD, RPD is feasible and justifiable without increasing vascular injury rate for patients with HAV (+). Hepatic artery variation has no negative impact on surgical, oncological, and survival outcomes following an RPD, if it is accurately identified pre-operatively and appropriately managed intraoperatively. [ABSTRACT FROM AUTHOR]