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Updated: Feb 7, 2026

Robot-assisted Total Mesorectal Excision and Lateral Pelvic Lymph Node Dissection for Locally Advanced Middle-low Rectal Cancer
Published on: February 12, 2022
Robotic versus laparoscopic gastrectomy with lymph node dissection for gastric cancer: study protocol for a
Toshiyasu Ojima1, Masaki Nakamura1, Mikihito Nakamori1
1Second Department of Surgery, School of Medicine, Wakayama Medical University, 811-1, Kimiidera, Wakayama, 641-8510, Japan.
This randomized controlled trial compares robotic gastrectomy (RG) to laparoscopic gastrectomy (LG) for gastric cancer. Robotic surgery may reduce infectious complications, prompting further investigation into its oncological outcomes.
Area of Science:
- Surgical Oncology
- Minimally Invasive Surgery
- Robotic Surgery
Background:
- Laparoscopic gastrectomy (LG) offers benefits for gastric cancer (GC) but has limitations, especially in complex dissections.
- Postoperative pancreatic fistula occurs in 4-7% of LG patients.
- Robotic surgery (RG) provides enhanced dexterity and visualization, potentially overcoming LG limitations.
Purpose of the Study:
- To compare short-term surgical and long-term oncological outcomes of LG and RG for GC.
- To evaluate the incidence of postoperative intra-abdominal infectious complications in RG versus LG.
- To provide evidence for expanding the use of RG in GC treatment.
Main Methods:
- A prospective, single-center randomized controlled trial (RCT).
- Includes 240 adult patients with surgically resectable gastric cancer (stages I-III).
- Primary endpoint: incidence of postoperative intra-abdominal infectious complications (pancreatic fistula, abscess, anastomotic leakage).
Main Results:
- Previous retrospective data suggested lower intra-abdominal infections with RG (0%) compared to LG (11%).
- This RCT aims to prospectively validate these findings.
- Secondary endpoints include overall complications, surgical results, and oncological outcomes.
Conclusions:
- Robotic-assisted gastrectomy (RG) shows promise in reducing infectious complications for gastric cancer patients.
- Further RCTs are needed to establish the full benefits and oncological efficacy of RG.
- Results will inform guidelines and potentially expand RG adoption for GC.
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