The increasing use of renal tumor biopsy amongst Canadian urologists: When is biopsy most utilized?
2021
Abstract Introduction The role of renal tumor biopsy (RTB) in the management of small renal masses (SRMs) is progressively being recognized as a tool to decrease overtreatment. While an increasing number of studies assessing its role in diagnostics are becoming available, RTB remains variably used amongst urologists. Many patient-, tumor-, and institution-related factors may influence urologists on whether to perform a RTB to help guide management. Objective We aimed at identifying factors associated with the use of RTB for localized SRMs within a number of centers contributing data to the Canadian Kidney Cancer information system. Material and methods We identified 3,838 patients diagnosed with a localized SRM (≤4 cm) between January 2011 and December 2018. Patients were stratified based on whether a RTB was performed prior to the primary therapeutic intervention. Factors associated with use of RTB were assessed using univariable and multivariable logistic regression models. Results A total of 993 patients (25.9%) underwent an RTB. There was an overall increase in RTB use over time (P Conclusion This large multicenter cohort study reveals an increasing adoption and overall use of RTB amongst Canadian urologists. Patients managed in high-volume centers and those undergoing non-surgical management were associated with greater use of RTB. Tumor size was also associated with RTB use. This study highlights the influence that physician perceptions and clinical factors may have in the decision to use RTB prior to initiating a therapeutic approach.
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