We thank Dr. Contieri and colleagues for taking the time to read our paper [1] carefully and for raising this important conceptual and semantic concern [2]. We fully agree with your distinction between active surveillance and observation after complete tumor resection.
European Urology published a clinical update in Research Highlights on 20 Mar 2026.
The item focuses on Reply to Roberto Contieri, Massimo Lazzeri, Sisto Perdonà, and Rodolfo Hurle’s Letter to the Editor re: Kitamura, Tsukamoto T, Kakehi Y, et al.
Active Surveillance Versus Intravesical Bacillus Calmette-Guérin for High-grade T1 Bladder Cancer with Negative Second Transurethral Resection: The Randomized Noninferiority Phase 3 JCOG1019 Trial.
Eur Urol.
In press.
http://dx.doi.org/10.1016/j.eururo.2026.01.008.
Review the original article for the full source wording and details.