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Muscle-invasive bladder cancer: evaluating treatment and survival in the National Cancer Data Base

BJU Int. 2014 Nov;114(5):719-26

BJU Int. 2014 Nov;114(5):719-26

Abstract

OBJECTIVE:

To evaluate the association between patterns of care and patient survival for the treatment of muscle-invasive bladder cancer (MIBC) using a large, national database.

PATIENTS AND METHODS:

We identified a cohort of 36,469 patients with MIBC (stage II) from 1998 to 2010 from the National Cancer Data Base. Patients were stratified into four treatment groups: radical cystectomy, chemo-radiation, other therapy, or no treatment. Overall survival (OS) among the groups was evaluated using Kaplan-Meier analysis and the log rank test. A multivariable Cox proportional hazards model was fit to evaluate the association between treatment groups and OS.

RESULTS:

In all, 27% of patients received radical cystectomy, 10% chemo-radiation, 61% other therapy and 2% no treatment. Unadjusted Kaplan-Meier analysis showed significant differences by treatment group, with cystectomy having the greatest median OS (48 months) followed by chemo-radiation (28 months), other therapy (20 months), and no treatment (5 months). When controlling for multiple covariates, the OS for cystectomy was similar to that for chemo-radiation (hazard ratio [HR] 1.05, 95% confidence interval [CI] 0.98, 1.12), but superior to other therapy (HR 1.42; 95% CI 1.35, 1.48), and no treatment (HR 2.40; 95% CI 2.12, 2.72). The OS time for chemo-radiation was superior to other therapy and no treatment.

CONCLUSIONS:

Radical cystectomy and chemo-radiation are significantly underused despite a substantial survival benefit compared with other therapies or no treatment. Future studies are needed to optimise care delivery and improve outcomes for patients with MIBC.

© 2013 The Authors. BJU International © 2013 BJU International.

KEYWORDS:

bladder cancer; bladder-sparing therapy; radical cystectomy; treatment outcome; urinary bladder neoplasms

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