Ahmed A Hussein1,2, Nobuyuki Hinata3, Shiva Dibaj1, Paul R May1, Justen D Kozlowski1, Hassan Abol-Enein4, Ronney Abaza5, Daniel Eun6, Mohamed S Khan7, James L Mohler1, Piyush Agarwal8, Kamal Pohar9, Richard Sarle10, Ronald Boris11, Sridhar S Mane1, Alan Hutson1, Khurshid A Guru1. 1. Department of Urology, Roswell Park Cancer Institute, Buffalo, NY, USA. 2. Department of Urology, Cairo University, Cairo, Egypt. 3. Department of Urology, University of Kobe, Kobe, Japan. 4. Department of Urology and Nephrology, Mansoura University, Mansoura, Egypt. 5. OhioHealth Robotic Surgery, Dublin, OH, USA. 6. Lewis Katz School of Medicine at Temple University, Philadelphia, PA, USA. 7. Center for Cancer Research, National Cancer Institute, Bethesda, MD, USA. 8. Ohio State University, Columbus, OH, USA. 9. Michigan Institute of Urology, Dearborn, MI, USA. 10. Indiana University, Indianapolis, IN, USA. 11. Guy's and St Thomas' NHS Foundation Trust and King's College School of Medicine, London, UK.
Abstract
OBJECTIVES: To develop a scoring tool, Pelvic Lymphadenectomy Appropriateness and Completion Evaluation (PLACE), to assess the intraoperative completeness and appropriateness of pelvic lymph node dissection (PLND) following robot-assisted radical cystectomy (RARC). PATIENTS, SUBJECTS AND METHODS: A panel of 11 open and robotic surgeons developed the content and structure of PLACE. The PLND template was divided into three zones. In all, 21 de-identified videos of bilateral robot-assisted PLNDs were assessed by the 11 experts using PLACE to determine inter-rater reliability. Lymph node (LN) clearance was defined as the proportion of cleared LNs from all PLACE zones. We investigated the correlation between LN clearance and LN count. Then, we compared the LN count of 18 prospective PLNDs using PLACE with our retrospective series performed using the extended template (No PLACE). RESULTS: A significant reliability was achieved for all PLACE zones among the 11 raters for the 21 bilateral PLND videos. The median (interquartile range) for LN clearance was 468 (431-545). There was a significant positive correlation between LN clearance and LN count (R2 = 0.70, P < 0.01). The PLACE group yielded similar LN counts when compared to the No PLACE group. CONCLUSIONS: Pelvic Lymphadenectomy Appropriateness and Completion Evaluation is a structured intraoperative scoring system that can be used intraoperatively to measure and quantify PLND for quality control and to facilitate training during RARC.
OBJECTIVES: To develop a scoring tool, Pelvic Lymphadenectomy Appropriateness and Completion Evaluation (PLACE), to assess the intraoperative completeness and appropriateness of pelvic lymph node dissection (PLND) following robot-assisted radical cystectomy (RARC). PATIENTS, SUBJECTS AND METHODS: A panel of 11 open and robotic surgeons developed the content and structure of PLACE. The PLND template was divided into three zones. In all, 21 de-identified videos of bilateral robot-assisted PLNDs were assessed by the 11 experts using PLACE to determine inter-rater reliability. Lymph node (LN) clearance was defined as the proportion of cleared LNs from all PLACE zones. We investigated the correlation between LN clearance and LN count. Then, we compared the LN count of 18 prospective PLNDs using PLACE with our retrospective series performed using the extended template (No PLACE). RESULTS: A significant reliability was achieved for all PLACE zones among the 11 raters for the 21 bilateral PLND videos. The median (interquartile range) for LN clearance was 468 (431-545). There was a significant positive correlation between LN clearance and LN count (R2 = 0.70, P < 0.01). The PLACE group yielded similar LN counts when compared to the No PLACE group. CONCLUSIONS:Pelvic Lymphadenectomy Appropriateness and Completion Evaluation is a structured intraoperative scoring system that can be used intraoperatively to measure and quantify PLND for quality control and to facilitate training during RARC.
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