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Updated: Jan 23, 2026

Culture of Bladder Cancer Organoids as Precision Medicine Tools
Published on: December 28, 2021
Adjuvant chemotherapy versus observation after radical cystectomy in patients with node-positive bladder cancer
Sahyun Pak1, Dalsan You2, In Gab Jeong2
1Department of Urology, Center for Urologic Cancer, National Cancer Center, Goyang, Korea.
Abstract:
This retrospective study compared adjuvant chemotherapy (AC) versus observation after radical cystectomy (RC) in patients with node-positive bladder cancer (pN+). Outcomes were reviewed in patients with pTanyN1-3M0 bladder cancer who underwent RC with or without AC between 1995 and 2017. Baseline characteristics between the two groups were controlled with inverse probability of treatment weighting (IPTW)-adjusted analyses. Of 281 enrolled patients, the 3-year IPTW-adjusted rates of overall survival was higher in the AC group than the RC group (46.4% vs. 33.7%, p = 0.024). AC was an independent predictor of overall survival (hazard ratio = 0.48; P < 0.0001). When patients were subdivided by lymph node density (LND), the 3-year overall survival rates were similar between the AC and RC groups in patients with LND < 9%, but higher in the AC group in patients with LND 9-25% (53.4% vs. 23.7%) and LND ≥ 25% (27.4% vs. 16.1%). The numbers needed to treat to prevent one death at 3 years were three and nine in patients with LND 9-25% and ≥25%, respectively. In conclusion, AC after RC was associated with improved overall survival in patients with node-positive bladder cancer. Patients with an intermediate nodal burden may benefit most from AC.
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