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, 10 (10), 3233-3242
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The Long-Term Clinical Outcomes of Robotic Gastrectomy for Gastric Cancer: A Large-Scale Single Institutional Retrospective Study

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The Long-Term Clinical Outcomes of Robotic Gastrectomy for Gastric Cancer: A Large-Scale Single Institutional Retrospective Study

Yuxing Jiang et al. Am J Transl Res.

Abstract

Backgrounds and purpose: Robotic surgery has been applied in gastric carcinoma over a decade. Although a series of studies were performed to investigate the short-term outcomes of robot-assisted gastrectomy, few papers were in view of long-term outcomes. The current study was aimed to explore the oncological outcomes of robotic gastrectomy for gastric cancer patients.

Methods: A total of 606 gastric cancer patients who underwent robot-assisted gastrectomy during March 2010 through March 2017, were enrolled in this research. The clinicopathologic characteristics, surgical procedures along with follow-up information and prognostic factors were recorded in detail. The disease-free survival and overall survival rates were tested by Kaplan-Meier analysis.

Results: All the patients underwent the robotic surgery including 15 proximal gastrectomies, 403 distal gastrectomies, 169 total gastrectomies and 19 remnant gastrectomies. Fifiy-six (9.24%) patients were lost in the follow-up process (3-87 months, a media of 42 months). There were 119 recurrences observed, including 55 local recurrences, 51 peritoneal metastasis and 13 distant metastasis. The 3-year disease-free survival and overall survival were 73.60% and 74.24%, while the 5-year disease-free survivorship and overall survival rates were 68.73% and 69.33%. The 5-year overall survival rates grouped based on TNM stage were 96.58% for IA, 88.16% for IB, 87.03% for IIA, 80.62% fo IIB, 58.50% for IIIA, 48.62% for IIIB, 45.32% for IIIC and 17.03% for IV.

Conclusion: Robot-assisted gastrectomy is a valuable procedure for gastric cancer patients. Beside its feasibility and safety, it reveals an acceptable long-term clinical outcome.

Keywords: Gastric cancer; follow-up; long-term outcomes; robot-assisted gastrectomy; survival.

Conflict of interest statement

None.

Figures

Figure 1
Figure 1
The placement and size for each trocar in RAG.
Figure 2
Figure 2
Cumulative 5-year overall survival conducted by Kaplan-Meier analysis. A. Stage I patients. B. Stage IB patients. C. Stage IIA patients. D. Stage IIB patients. E. Stage IIIA patients. F. Stage IIIB patients. G. Stage IIIC patients. H. Stage IV patients.
Figure 3
Figure 3
The results of cumulative 5-year overall survival for subgroup analyses. A. Subgroup analysis by the age (<65 y or ≥65 y). B. Subgroup analysis by the types of resection. C. Subgroup analysis by the BMI.

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