Comparison of long-term oncologic outcomes laparoscopy-assisted gastrectomy and open gastrectomy for gastric cancer
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ORIGINAL ARTICLE
Comparison of long-term oncologic outcomes laparoscopy-assisted gastrectomy and open gastrectomy for gastric cancer Xin-Yu Mao 1 & Hua Zhu 1 & Wei Wei 1 & Xin-Lei Xu 1 & Wei-Zhi Wang 2 & Bao-Lin Wang 1 Received: 1 March 2020 / Accepted: 22 September 2020 # Springer-Verlag GmbH Germany, part of Springer Nature 2020
Abstract Purpose Laparoscopy-assisted gastrectomy (LAG) is proven by considerable studies as a safe procedure for early gastric cancer (EGC), but its long-term oncologic outcomes in advanced gastric cancer (AGC) have not been well-described. This study aimed at verifying the non-inferiority of LAG in the treatment of EGC and comparing the oncological feasibility of LAG and open gastrectomy (OG) for AGC. Methods A total of 209 consecutive patients who underwent LAG or OG with D2 lymph node dissection between December 2008 and November 2012 were included. The survival rate was estimated with the Kaplan–Meier method and the risk factors affecting the survival and recurrence were evaluated with Cox regression models. Subgroup analysis was performed in AGC patients receiving both distal and total gastrectomy. Results Of 209 patients, 194 (92.8%; mean age, 62.7 years; 56 [28.9%] women) eligible patients were finally enrolled in this study. No significant differences in the number of lymph nodes retrieved and postoperative complications were observed between patients receiving LAG and OG. During a mean follow-up of 58.3 ± 38.1 months (range 0–121 months), the 5-year overall survival and disease-free survival rates were 56.1% and 53.0% for LAG, and 57.7% and 50.9% for OG. In the subgroup analysis for AGC, laparoscopy-assisted distal gastrectomy and total gastrectomy did not result in inferior long-term outcomes, and recurrence was found in 49 patients (31.2%). Age more than 65 years and the advanced tumor stage were independent risk factors of survival. Conclusion LAG is a feasible and safe treatment for gastric cancer, with good oncologic results. Keywords Laparoscopy-assisted gastrectomy . Gastric cancer . Oncological outcome
Introduction Since laparoscopy-assisted gastrectomy (LAG) for gastric cancer was first reported in Japan [1], this approach showed Xin-Yu Mao and Hua Zhu contributed equally to this work. Electronic supplementary material The online version of this article (https://doi.org/10.1007/s00423-020-01996-8) contains supplementary material, which is available to authorized users. * Wei-Zhi Wang [email protected] * Bao-Lin Wang [email protected] 1
Department of General Surgery, The Second Affiliated Hospital of Nanjing Medical University, 121 Jiangjiayuan Road, Nanjing 210011, Jiangsu, China
2
Department of General Surgery, The First Affiliated Hospital of Nanjing Medical University, 300 Guangzhou Road, Nanjing 210029, Jiangsu, China
the following benefits over open surgery: accelerated recovery, better cosmesis, less invasiveness, and decreased complication rates. With the rapid development of laparoscopic instruments and surgical techniques, LAG is widely accepted for tre
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