Robotic Anterior Resection for Rectosigmoid Colon Cancer using Single Port Access.

Single-port laparoscopic surgery (SPLS) and a robotic surgical system have recently been included in contemporary colorectal surgical practice. 1-4 SPLS may result in better cosmetic outcomes, reduced postoperative incisional pain, fewer incisional hernias, minimal organ damage, and fewer wound complications. 2,5 However, SPLS for left-sided colorectal cancer is a challenging technique, even for experienced laparoscopic colorectal surgeons, owing to the difficulty of constructing instrument triangulation and using endo-staplers in the pelvic cavity from a single umbilical port with adequate distal margins. The Da Vinci Si Single-Site ® system (Intuitive Surgical, Sunnyvale, CA) was specifically developed to overcome SPLS limitations. Since the robotic instruments are crossed at the port site, but the software "reassigns" them to the surgeon's hand on the robotic console, the platform can easily create instrument triangulation while minimizing external robotic arm collisions. 6-8 Due to the lack of wrist articulation, the limited range of motion of the semi-rigid robotic instruments, and the limited choice of instruments, the Single-Site ® platform has not yet been widely utilized for colorectal diseases. A novel robotic technique, the da Vinci SP ® system (Intuitive Surgical, Sunnyvale, CA, USA), was designed for single-site surgery. This platform has a robotic arm with a high degree of freedom that is introduced directly into the peritoneal cavity through a single incision. The benefits of the single-port da Vinci robot platform include a holographic display of the instrument location, wristed articulation and flexible elbows, a console-controlled camera, and three-dimensional optics. This robotic system for single-port access can perform lymph node dissection around the inferior mesenteric artery using 4-arm wrist articulation while preserving the autonomic nerves during left-sided colorectal cancer surgery.