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Updated: Aug 9, 2026
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Robot-assisted Total Mesorectal Excision and Lateral Pelvic Lymph Node Dissection for Locally Advanced Middle-low Rectal Cancer
Published on: February 12, 2022
Precise and minimally invasive localization of pelvic nodes during robot-assisted surgery using image-guided
Laura Aguilera Saiz1, Wouter J Heerink2, Harald C Groen2
1Department of Surgical Oncology, Netherlands Cancer Institute, Amsterdam, The Netherlands. l.aguilera@nki.nl.
Summary
This study integrated novel navigation techniques for robot-assisted sentinel lymph node biopsy (SLNB), achieving 90% success in localizing sentinel nodes (SN) with enhanced precision and safety.
Area of Science:
- Surgical Navigation
- Robotic Surgery
- Medical Imaging
Background:
- Image-guided surgical navigation enhances precision and safety.
- The increasing use of robot-assisted surgery necessitates integrated navigation systems.
Purpose of the Study:
- To evaluate the integration of novel registration, instrument tracking, and visualization techniques with navigation for robot-assisted sentinel lymph node biopsy (SLNB).
- To assess the feasibility and accuracy of these integrated techniques in localizing sentinel nodes.
Main Methods:
- Prospective feasibility study involving 30 patients undergoing robot-assisted SLNB.
- Analysis of ultrasound registration and instrument tracking accuracy.
- Surgeon questionnaires evaluated ultrasound registration, instrument tracking, and visualization (VR vs. AR).
Main Results:
- Ultrasound registration was fast (7 min), accurate (0.1 cm), and intuitive.
- Tracked instruments precisely localized sentinel nodes (SN) with 0.3 cm accuracy.
- Successful SN identification using navigation was achieved in 90% (45/50) of cases, with no navigation-related complications.
Conclusions:
- Integration of ultrasound registration, instrument tracking, and enhanced visualization improves navigation in robot-assisted surgery.
- These techniques enable safe and accurate identification and removal of small pelvic lymph nodes.
