Second-look resection for primary stage T1 bladder cancer: a population-based study

Area of Science:

• Urology
• Oncology
• Cancer Research

Background:

• Stage T1 bladder cancer (BC) requires careful management to optimize outcomes.
• Second-look resection (SLR) is a surgical approach that may improve staging and treatment efficacy.
• Understanding the utilization and impact of SLR in a real-world setting is crucial for clinical practice.

Purpose of the Study:

• To evaluate the utilization patterns of second-look resection (SLR) in stage T1 bladder cancer (BC).
• To assess the association between SLR and cancer-specific survival (CSS) in a population-based cohort.
• To identify factors influencing the use of SLR and its impact on patient outcomes.

Main Methods:

• A population-based cohort of 903 patients diagnosed with stage T1 BC between 2008-2009 in Sweden was identified.
• Data on TNM stage, grade, primary treatment, and SLR findings were collected and validated.
• Cancer-specific survival (CSS) was the primary endpoint, with statistical analysis to determine the impact of SLR.

Main Results:

• SLR was performed in 55% of patients, with significant regional variation (18%-77%).
• Patients undergoing SLR had a lower risk of BC mortality (HR 0.62, P < .0022).
• Five-year CSS rates were higher for patients with T0 (90%), Ta/Tis (90%), and T1 (82%) tumors at SLR compared to T2-4 (56%).

Conclusions:

• Significant geographical disparities exist in SLR use for stage T1 BC in Sweden, likely due to local treatment variations.
• SLR is associated with improved CSS, although selection bias related to patient age and residual tumor rates may influence outcomes.
• Further research is warranted to standardize SLR protocols and optimize its application in T1 BC management.