Minimally invasive vs open pancreatectomy for nonfunctioning pancreatic neuroendocrine tumors

BACKGROUND The mainstay of treating nonfunctioning-pancreatic neuroendocrine tumors(NF-PNETs) is surgical resection. However, minimally invasive approaches to pancreatic resection for treating NF-PNETs are not widely accepted, and the long-term oncological outcomes of such approaches remain unknown. AIM To determine the short- and long-term outcomes of minimally invasive pancreatic resection conducted in patients with NF-PNETs. METHODS Prospective databases from Severance Hospital were searched for 110 patients who underwent curative resection for NF-PNETs between January 2003 and August 2018. RESULTS The proportion of minimally invasive surgery (MIS) procedures performed for NF-PNET increased to more than 75% after 2013. There was no significant difference in post-operative complications (P = 0.654), including pancreatic fistula (P = 0.890) and delayed gastric emptying (P = 0.652), between MIS and open approaches. No statistically significant difference was found in disease-free survival between the open approach group and the MIS group (median follow-up period, 28.1 mo; P = 0.428). In addition, the surgical approach (MIS vs open) was not found to be an independent prognostic factor in treating NF-PNET patients [Exp(beta) = 1.062; P = 0.929]. CONCLUSION Regardless of the type of surgery, a minimally invasive approach can be safe and feasible for select NF-PNET patients.