Evaluating the Clinical Impact of Ureteral Frozen Section Analysis During Radical Cystectomy: A Single-Center Retrospective Study.

Introduction The objective of this study is to find out if there are any differences in upper urinary tract recurrence and overall mortality between patients who underwent a frozen section analysis during radical cystectomy and those who did not. Materials and methods In an observational retrospective cohort study, we evaluated data from 164 patients who underwent radical cystectomy in our institution over a five-year period from 2013 to 2018. Fisher's exact test was applied to find any difference in upper urinary tract recurrence between the two groups. The Kaplan-Meier method and the log-rank (Mantel-Cox) test were used to determine differences or equivalence between treatment groups. Results The sensitivity was 84.6% and the specificity was 95.3% for the frozen section. There was no statistically significant relationship between performing a frozen section and upper urinary tract recurrence, as indicated by Fisher's exact test (p=0.619). The Kaplan-Meier test showed no statistically significant relationship between performing a frozen section analysis and overall mortality. Discussion The use of ureteric frozen section analysis during radical cystectomy is traditionally taught during surgical training, but the evidence base for this practice is sketchy. Frozen section analysis is thought to reduce the chances of local recurrence and arguably upper urinary tract recurrence. The overall upper urinary tract recurrence after radical cystectomy is reported to be 2-6%, consistent with the 3.3% observed in our study. Conclusion Our study demonstrates that while frozen section analysis is sensitive and specific in detecting dysplasia, it does not significantly impact upper tract recurrence or overall mortality.
Competing Interests: Human subjects: Consent was obtained or waived by all participants in this study. Animal subjects: All authors have confirmed that this study did not involve animal subjects or tissue. Conflicts of interest: In compliance with the ICMJE uniform disclosure form, all authors declare the following: Payment/services info: All authors have declared that no financial support was received from any organization for the submitted work. Financial relationships: All authors have declared that they have no financial relationships at present or within the previous three years with any organizations that might have an interest in the submitted work. Other relationships: All authors have declared that there are no other relationships or activities that could appear to have influenced the submitted work.
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