Laparoscopic Surgery of Gastric Cancer with D2 Lymphadenectomy and Omentum Preservation: Our 10 Years Experience.

Introduction: The debate is still open about laparoscopic treatment of gastric cancer. The aim of this retrospective study is to analyze our short-, medium-, and long-term surgical and oncological results in laparoscopic treatment of gastric cancer with D2 lymphadenectomy and omentum preservation. Materials and Methods: From January 2010 to June 2018, after >150 surgical procedures for gastric cancer performed by minimally invasive approach, we performed 100 laparoscopic subtotal gastrectomies and 38 total gastrectomies, both for early gastric cancer (EGC) and advanced gastric cancer (AGC). We always made a D2 lymphadenectomy or higher. As often as possible, we performed omentum-preserving technique. Primary outcomes analyzed included incidence of medical and surgical complications. Secondary outcomes analyzed were survival probability and incidence of relapse. Every patient read and signed informed consent before surgery. Results: Mean operative time: 2.4 +/- 0.7 hours (range 1.2-4.7 hours). Rate of conversions: 14.5% (20/138); intraoperative complications: 1.4% (2/138) and positive resection margins: 6.5% (9/138). Overall incidence of duodenal fistula: 3.6% (5/138). Rate of reoperation was 7.3% (10/138). Postoperative complications according to Clavien-Dindo classification: I 3.6% (5/138); II 13.0% (18/138); III 5.8% (8/138); III B 0.7% (1/138); V 1.4% (2/138). Overall survival with 60 months follow-up was 58%. Overall 60 months incidence of relapse was 44%. Patients with omentum preservation had a lower incidence of relapse than patients with omentectomy (40% versus 57% P = .002). Conclusions: Laparoscopic treatment of gastric cancer with D2 lymphadenectomy and omentum preservation is safe and feasible, both for EGC and for AGC. Although this study has limitations, omentum-preserving technique was associated with a statistically lower recurrence rate.