Curative therapy for bladder cancer in routine clinical practice: a population-based outcomes study

Area of Science:

• Urology
• Oncology
• Cancer Research

Background:

• Bladder cancer management involves cystectomy or radiotherapy, with ongoing debate on optimal treatment strategies.
• Routine clinical practice data is crucial for understanding real-world treatment patterns and outcomes.

Purpose of the Study:

• To analyze trends in cystectomy versus radiotherapy for bladder cancer in Ontario from 1994-2008.
• To compare the survival outcomes between cystectomy and radiotherapy for bladder cancer patients.

Main Methods:

• Retrospective analysis of bladder cancer treatment records linked to the Ontario Cancer Registry (1994-2008).
• Practice patterns evaluated across three time periods (1994-1998, 1999-2003, 2004-2008).
• Statistical analyses included logistic regression, Cox models, and propensity score matching to assess treatment choice and survival.

Main Results:

• Cystectomy rates increased from 66% to 78%, while radiotherapy decreased from 34% to 22% over the study period (P < 0.001).
• Significant regional variations in radiotherapy use were observed (16-51%).
• Five-year cancer-specific survival (CSS) was 40% for cystectomy and 35% for radiotherapy (P < 0.001); overall survival was 36% vs. 26% respectively.
• Multivariate analyses showed no significant difference in CSS between treatments (HR 0.99), but radiotherapy was linked to slightly inferior overall survival (HR 1.08).

Conclusions:

• Cystectomy utilization for bladder cancer has risen in routine practice.
• No significant difference in cancer-specific survival was found between cystectomy and radiotherapy.
• Radiotherapy was associated with slightly poorer overall survival compared to cystectomy.