Survival after radical cystectomy: Progressive versus De novo muscle invasive bladder cancer
SourceCancer Treatment and Research Communications, 25, (2020), article 100264
Article / Letter to editor
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Cancer Treatment and Research Communications
SubjectRadboudumc 15: Urological cancers RIHS: Radboud Institute for Health Sciences; Radboudumc 15: Urological cancers RIMLS: Radboud Institute for Molecular Life Sciences
BACKGROUND: Despite treatment with radical cystectomy, patients with muscle invasive bladder cancer (MIBC) have a poor survival. It has been reported that survival is worse in NMIBC patients who progressed to MIBC in comparison to patients with de novo MIBC. The objective of this study was to compare survival of progressive versus de novo MIBC. Secondary objective was to explain this difference in survival by clinicopathological factors. METHODS: 431 patients with MIBC who underwent radical cystectomy between 1998 and 2016 in the Radboudumc, Nijmegen, were retrospectively analyzed. 313 patients were identified with de novo MIBC and 118 with progressive MIBC. RESULTS: 5- and 10-year overall survival (OS) of patients with progressive MIBC was 37% and 20%, respectively. Patients with de novo MIBC had significantly better survival, with a 5- and 10-year OS of 49% and 39%, respectively. Patients with progressive MIBC were more frequently diagnosed with concomitant carcinoma in situ and positive surgical margins in bladder, ureters or urethra. In multivariable analysis that adjusted for these factors, progressive MIBC was associated with a hazard ratio of 1.40 (0.99 - 1.98). Kaplan-Meier survival curves show a detrimental effect of progressive MIBC in patients with pT2 versus pT3-4 tumors and in patients with negative versus positive surgical margins. In multivariable analysis, this effect modification disappeared. CONCLUSIONS: Progressive MIBC is associated with poorer survival than de novo MIBC. Because most patients with progressive MIBC had a history of high risk NMIBC, considering radical cystectomy is most important in the highest risk NMIBC.
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