Abstract
Purpose
The purpose of this study was to evaluate the long-term outcomes of robotic rectal cancer surgery and to examine the risk factors for recurrence.
Methods
In a high-volume center in Japan, we retrospectively enrolled patients with pStage I–III rectal cancer within 15 cm of the anal verge who underwent robotic surgery from 2011 to 2017. Almost all patients underwent upfront surgery, and lateral lymph-node dissection (LLND) was performed for patients with locally advanced lower rectal cancer. We evaluated the 5-year overall survival (OS), relapse-free survival (RFS), and cumulative local recurrence (LR) rates and examined the risk factors for the RFS.
Results
We evaluated 488 patients who underwent robotic rectal cancer surgery, including 5.1% who underwent preoperative chemoradiotherapy to obtain clear resection margins and 33.6% who underwent LLND. There were 203, 87, and 198 patients with pStage I, II, and III, respectively, and the positive resection margin rate was 1.0%. The 5-year OS, RFS, and LR rates were 95.5%, 81.7%, and 2.2%, respectively. The independent risk factors for the RFS were the presence of venous invasion, extramural tumor deposits without lymph-node structure, and pT ≥ 3.
Conclusion
This study demonstrated the favorable long-term outcomes of robotic rectal cancer surgery.
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Data availability
The datasets generated during and analyzed during the current study are available from the corresponding author on reasonable request.
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Yusuke Kinugasa received lecture fees from Johnson and Johnson and Intuitive Surgical.
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Kasai, S., Kagawa, H., Shiomi, A. et al. Long-term outcomes of upfront robotic rectal cancer surgery: a single-center, retrospective cohort study in Japan. Surg Today 53, 1028–1037 (2023). https://doi.org/10.1007/s00595-023-02648-2
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DOI: https://doi.org/10.1007/s00595-023-02648-2