Minimally Invasive Pure Single-Incision da Vinci SP vs Xi Surgery for Right Colon Cancer

Overview

This study compared pure single-incision da Vinci SP robotic surgery without assistant ports to da Vinci Xi surgery for right-sided colon cancer. Using propensity score matching and inverse probability weighting, SP surgery demonstrated reduced postoperative pain and lower inflammatory markers, indicating less invasiveness while maintaining comparable short-term surgical outcomes.

Background

Colorectal cancer is a leading cause of cancer morbidity and mortality worldwide. Robotic-assisted surgery, including the da Vinci Xi system, has improved surgical precision and outcomes compared to conventional laparoscopy. The newer da Vinci SP system offers potential advantages in minimal invasiveness and cosmetic results by enabling pure single-incision surgery without additional assistant ports. However, comparative data focusing on right-sided colon cancer and objective measures of surgical invasiveness such as postoperative pain and inflammatory markers remain limited.

Data Highlights

Key Findings

• Pure single-incision da Vinci SP surgery was successfully performed without any additional assistant ports.
• Postoperative pain scores (NRS) were significantly lower in the SP group compared to the Xi group.
• The CRP/albumin ratio, an indicator of postoperative inflammation, was lower after SP surgery, suggesting reduced surgical stress.
• Short-term surgical outcomes such as operative time, blood loss, complication rates, and hospital stay were comparable between SP and Xi systems.
• The SP system’s pure single-port approach may overcome previous limitations related to lack of integrated energy devices and staplers by eliminating the need for assistant ports.

Clinical Implications

Pure single-incision da Vinci SP surgery offers a minimally invasive alternative to the da Vinci Xi system for right-sided colon cancer, with benefits including reduced postoperative pain and inflammation. Surgeons may consider the SP system to enhance patient recovery while maintaining equivalent safety and efficacy. The elimination of assistant ports simplifies the surgical approach and may improve cosmetic outcomes.

Conclusion

Pure single-incision da Vinci SP robotic surgery for right-sided colon cancer demonstrates reduced invasiveness as evidenced by lower pain and inflammatory markers, without compromising short-term surgical outcomes compared to the da Vinci Xi system. This supports the SP system as a feasible and potentially superior minimally invasive surgical platform.

References

1. Colorectal Cancer Statistics 2023 -- Global Cancer Observatory
2. Robotic Surgery Advantages -- Surgical Endoscopy 2021
3. da Vinci SP vs Xi Outcomes -- Journal of Robotic Surgery 2022
4. Single-Port Robotic Surgery Reviews -- Surgical Innovation 2023
5. Inflammatory Markers in Surgery -- Annals of Surgery 2020
6. Pain Assessment Using NRS -- Pain Medicine 2019