Abstract
Purpose
To compare the population-based incidence of peritoneal carcinomatosis following open (ORC) vs. robotic-assisted radical cystectomy (RARC).
Methods
Using the Surveillance, Epidemiology and End Results Program (SEER)—Medicare linked data, we identified 1,621 patients who underwent radical cystectomy for bladder cancer during 2009 and 2014; 18.1% (n = 294) and 81.9% (n = 1327) underwent RARC and ORC, respectively. We subsequently evaluated the rates of peritoneal carcinomatosis at 6, 12, and 24 months following surgery. Multivariable proportional hazards regression was performed to determine factors associated with development of peritoneal carcinomatosis.
Results
Patients who underwent RARC vs. ORC were more likely to be male (p = 0.04); however, age at diagnosis, race, comorbidities, education, and marital status (all p > 0.05) did not differ by surgical approaches. Our findings showed that there were no significant differences in the rates of peritoneal carcinomatosis between ORC and RARC at 6, 12, and 24 months. In adjusted analyses, factors associated with peritoneal carcinomatosis were advanced N stage (N0 versus N2/3: HR 0.30, 95% CI 0.16–0.55, p < 0.01), preoperative hydronephrosis (HR 1.70, 95% CI 1.09–2.65, p = 0.04), higher T stage (T1 versus T4: HR 0.34, 95% CI 0.15–0.79, p < 0.01; T2 versus T4: HR 0.39, 95% CI 0.20–0.76, p < 0.01), and use of neoadjuvant chemotherapy (HR 1.78, 95% CI 1.11–2.84, p < 0.01). However, RARC was not associated with peritoneal carcinomatosis (HR 1.36, 95% CI 0.78–2.35).
Conclusion
In this population-based analysis, we found no difference in peritoneal carcinomatosis between robotic or open approaches to radical cystectomy. These data should be reassuring to those utilizing robotic cystectomy.
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Funding
Jim C. Hu and Leonardo D. Borregales receives research support from the Frederick J. and Theresa Dow Wallace Fund of the New York Community Trust. Jim C. Hu also receives salary support from NIH R01 CA241758 and PCORI CER-2019C1-15682. Jonathan E. Shoag is supported by the Damon Runyon Cancer Research Foundation Physician Scientist Training Award and Vinney Scholar Award.
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SPB: project development, data collection, data analysis, and manuscript writing. BAHAA: project development, data collection, data analysis, and manuscript writing. LDB: manuscript writing/editing. PA: manuscript writing/editing. AS: protocol/project development and manuscript writing/editing. JES: protocol/project development and manuscript writing/editing. JCH: protocol/project development and manuscript writing/editing.
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The authors declare no conflicts of interest.
Research involving human participants and/or animals
SEER-Medicare data are considered by HIPAA requirements as a limited data set, which requires that investigators sign a Data Use Agreement prior to receiving the data. This exception allows for the release of the SEER-Medicare data without obtaining authorization from individual patients (see Federal Register, August 14, 2002, pg 53235).
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Our study was approved by the Weill Cornell Medicine Institutional Review Board. Medicare files used were in accordance with data agreement between National Cancer Institute (NCI) and the Centers for Medicare and Medicaid Services (CMMS).
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Basourakos, S.P., Al Hussein Al Awamlh, B., Borregales, L.D. et al. A comparative population-based analysis of peritoneal carcinomatosis in patients undergoing robotic-assisted and open radical cystectomy. Int Urol Nephrol 54, 1513–1519 (2022). https://doi.org/10.1007/s11255-022-03216-2
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DOI: https://doi.org/10.1007/s11255-022-03216-2