[Laparoscopic Pancreatectomy for Pancreatic Neuroendocrine Tumor - A Single Institution Experience].

BACKGROUND: Pancreatic neuroendocrine tumor(P-NET)is relatively rare and often has less aggressive biological behavior. P-NET was re-designated by the WHO in 2010 and 2017. Laparoscopic surgery is minimally invasive but has technical difficulties such as limitation of movement and laparoscopic view. The purpose of this study is to evaluate the efficacy of laparoscopic pancreatectomy(LPT)for P-NET.

METHODS: Between January 2012 and June 2017, 6 patients underwent LPT for P-NET at Kansai Rosai Hospital. Five patients who received open pancreatectomy(OPT)for P-NET and 41 patients who received laparoscopic distal pancreatectomy(LDP)for cystic tumor(CyT)or invasive ductal carcinoma(IDC)were included for comparison.

RESULTS: All patients who underwent LPT for P-NET were NET G1 in WHO Classification 2017 and Stage I in UICC TNM 2016. No significant differences were noted between LPT and OPT groups with respect to patient age or gender. Operation time was 421.5 versus 423.5 minutes(ns), blood loss was 121.7 versus 1,918.3mL(ns), hospital stay was 20.5 versus 58.0 days(ns)for LPT and OPT respectively. In LDP, there were no significant differences between PNEN, CyT, and IDC groups with respect to patient age, gender, operation time, blood loss and hospital stay. All patients who underwent LPT for P-NET alive without recurrence. The average observation period was 58.4 months.

CONCLUSIONS: Laparoscopic pancreatectomy is safe and effective approach to the management of pancreatic neuroendocrine neoplasm.