OBJECTIVE: To evaluate the incidence of, and predictors for, lymphadenectomy in patients undergoing robot-assisted radical cystectomy (RARC) for bladder cancer. PATIENTS AND METHODS: Utilizing the International Robotic Cystectomy Consortium (IRCC) database, 527 patients were identified who underwent RARC at 15 institutions from 2003 to 2009. After stratification by age group, sex, pathological T stage, nodal status, sequential case number, institutional volume and surgeon volume, logistic regression was used to correlate variables to the likelihood of undergoing lymphadenectomy (defined as ≥ 10 nodes removed). RESULTS: Of the 527 patients, 437 (82.9%) underwent lymphadenectomy. A mean of 17.8 (range 0-68) lymph nodes were examined. Tumour stage, sequential case number, institution volume and surgeon volume were significantly associated with the likelihood of undergoing lymphadenectomy. Surgeon volume was most significantly associated with lymphadenectomy on multivariate analysis. High-volume surgeons (> 20 cases) were almost three times more likely to perform lymphadenectomy than lower-volume surgeons, all other variables being constant [odds ratio (OR) = 2.37; 95% confidence interval (CI) = 1.39-4.05; P = 0.002]. CONCLUSION: The rates of lymphadenectomy at RARC for advanced bladder cancer are similar to those of open cystectomy series using a large, multi-institutional cohort. There does, however, appear to be a learning curve associated with the performance of lymphadenectomy at RARC.
OBJECTIVE: To evaluate the incidence of, and predictors for, lymphadenectomy in patients undergoing robot-assisted radical cystectomy (RARC) for bladder cancer. PATIENTS AND METHODS: Utilizing the International Robotic Cystectomy Consortium (IRCC) database, 527 patients were identified who underwent RARC at 15 institutions from 2003 to 2009. After stratification by age group, sex, pathological T stage, nodal status, sequential case number, institutional volume and surgeon volume, logistic regression was used to correlate variables to the likelihood of undergoing lymphadenectomy (defined as ≥ 10 nodes removed). RESULTS: Of the 527 patients, 437 (82.9%) underwent lymphadenectomy. A mean of 17.8 (range 0-68) lymph nodes were examined. Tumour stage, sequential case number, institution volume and surgeon volume were significantly associated with the likelihood of undergoing lymphadenectomy. Surgeon volume was most significantly associated with lymphadenectomy on multivariate analysis. High-volume surgeons (> 20 cases) were almost three times more likely to perform lymphadenectomy than lower-volume surgeons, all other variables being constant [odds ratio (OR) = 2.37; 95% confidence interval (CI) = 1.39-4.05; P = 0.002]. CONCLUSION: The rates of lymphadenectomy at RARC for advanced bladder cancer are similar to those of open cystectomy series using a large, multi-institutional cohort. There does, however, appear to be a learning curve associated with the performance of lymphadenectomy at RARC.
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