Cancer Res Treat.  2015 Jul;47(3):495-500. 10.4143/crt.2014.050.

Previous Bladder Cancer History in Patients with High-Risk, Non-muscle-invasive Bladder Cancer Correlates with Recurrence and Progression: Implications of Natural History

Affiliations
  • 1Department of Urology, University of Thessaly, School of Health Sciences, Faculty of Medicine, University Hospital of Larissa, Larissa, Greece. lamprosmit@gmail.com
  • 2Department of Transfusion Medicine, University of Thessaly, School of Health Sciences, Faculty of Medicine, University Hospital of Larissa, Larissa, Greece.
  • 3Department of Pathology, Agios Andreas Hospital, Patras, Greece.
  • 4Department of Biological Chemistry, Medical School, University of Athens, Athens, Greece.

Abstract

PURPOSE
The purpose of this study was to assess the correlation of previous bladder cancer history with the recurrence and progression of patients with high-risk non-muscle-invasive bladder cancer treated with adjuvant Bacillus Calmette-Guerin (BCG) and to evaluate their natural history.
MATERIALS AND METHODS
Patients were divided into two groups based on the existence of previous bladder cancer (primary, non-primary). A logistic regression analysis was used to identify the possible differences in the probabilities of recurrence and progression with respect to tumor history, while potential differences due to gender, tumor size (> 3 cm, < 3 cm), stage (pTa, T1), concomitant carcinoma in situ (pTis) and number of tumors (single, multiple) were also assessed. Univariate and multivariate models were employed. In addition, Kaplan-Meier survival analysis was used to compare recurrence- and progression-free survival between the groups.
RESULTS
A total of 192 patients were included (144 with primary and 48 with non-primary tumors). The rates of recurrence and progression for patients with primary tumors were 27.8% and 12.5%, respectively. The corresponding percentages for patients with non-primary tumors were 77.1% and 33.3%, respectively. The latter group of patients displayed significantly higher probabilities of recurrence (p=0.000; 95% confidence interval [CI], 4.067 to 18.804) and progression (p=0.002; 95% CI, 1.609 to 7.614) in a univariate logistic regression analysis. Previous bladder cancer history remained significant in the multivariate model accounting for history, age, gender, tumor size , number of tumors, stage and concomitant pTis (p=0.000; 95% CI, 4.367 to 21.924 and p=0.002; 95% CI, 1.611 to 8.182 for recurrence and progression respectively). Kaplan-Meier curves revealed that the non-primary group hadreduced progression- and recurrence-free survival.
CONCLUSION
Previous non-muscle-invasive bladder cancer history correlates significantly with recurrence and progression in patients with high-risk non-muscle-invasive disease treated with adjuvant BCG.

Keyword

High-risk; Non-muscle-invasive bladder cancer; Previous bladder cancer history; Recurrence; Disease progression

MeSH Terms

Bacillus
Carcinoma in Situ
Disease Progression
Disease-Free Survival
Humans
Logistic Models
Mycobacterium bovis
Natural History*
Recurrence*
Urinary Bladder Neoplasms*

Figure

  • Fig. 1. Kaplan-Meier survival curves for the difference in recurrence free survival between patients with primary (blue) and non-primary (green) tumors.

  • Fig. 2. Kaplan-Meier survival curves for the difference in progression free survival between patients with primary (blue) and non-primary (green) tumors.


Reference

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